Value modification rules – reference

This page lists every rule of the Modify Value expression with its parameters. The rule names and parameter names are shown exactly as in the editor: the rule is chosen in "Type", its parameters appear below it.

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1. Rules at a glance

Group	Rules
Extracting text	TextAfter, TextBefore, TextBetween, TextAfterUntilEndOfLine, TextBeforeFromStartOfLine, NextWord, PreviousWord, NextNumber, PreviousNumber, FirstWord, LastWord, FirstNumber, LastNumber, Left, Right, Substring, IndexOf, TextLength, RegexFirstMatch
Changing text	Replace, ReplaceCased, RegexReplace, Remove, ToUpper, ToLower, UpperCaseFirst, Trim, TrimStart, TrimEnd, PadLeft, PadRight, EllipseText, AppendLine, PrependLine, RemoveLastLine, RemoveLine, RemoveCarriageReturns, RemoveLineBreaks, RemoveWhiteSpace, HtmlToPlainText, MarkdownToHtml
Tests and decisions	Contains, ContainsCased, StartsWith, StartsWithCased, EndsWith, EndsWithCased, TextEquals, TextEqualsCased, IsEmpty, RegexIsMatch, ContainsNumber, IsValidDate, IsValidTime, IsValidDateTime, TextToLogical, Not, Coalesce, Conditional
Numbers	MathRound, MathAbsolute, MathTruncate, MathCeiling, MathFloor, MathAppendFormula, MathPrependFormula, NumberFormat, SecondsToTimeFormat
Dates and times	DateTimeFormat, DateTimeParse, DateTimeAdd, DateTimeDiff, ConvertTimeZone, DateTimeFirstOfYear, DateTimeFirstOfMonth, DateTimeFirstOfWeek, DateTimeLastOfYear, DateTimeLastOfMonth, DateTimeLastOfWeek, UnixTimestampToDateTime, DateTimeToUnixTimestamp, HumanizeTimestamp, IsDateWithInBusinessHours, IsDateTimeWithInBusinessHours
Reading JSON	JObjectJsonPathValue, JObjectJsonPathArray, JObjectFindElement, JObjectPropertyNameAt, JObjectKeys, JArrayJsonPathValue, JArrayJsonPathArray, JArrayElementAt, JArrayFirstElement, JArrayLastElement, JArrayLength, JArrayHasElements, JArrayContains, JArraySum, JArrayMin, JArrayMax, JArrayAverage
Building JSON and lists	JObjectSetProperty, JObjectRemoveProperty, JObjectMerge, JArrayAppend, ConcatJArray, JArrayRemoveAt, JArraySort, JArrayDistinct, JArrayReverse, SplitStringJsonArray, SplitStringJsonArrayKeepEmpty, SplitLines, JoinJArray, RegexToJArray, CsvToJArray, JArrayToCsv
XML	XObjectFindElement, XObjectFindElementWithAttribute, XObjectFindElementWithAttributeValue, XObjectGetAttributeValue, XObjectXPathValue, XObjectXPathArray, XArrayXPathValue, XArrayXPathArray, XArrayLength, XArrayFindElementAt, XArrayFirstElement, XArrayLastElement, XArrayHasElements, XmlToJson, JsonToXml
Encoding	JsonEncode, JsonDecode, EncodeBase64, DecodeBase64, Base64ToHex, HexToBase64, UrlEncode, UrlDecode, HtmlEncode, HtmlDecode, EncodeBackslashCrLf, DecodeBackslashCrLf, EncodeBackslashQuote, DecodeBackslashQuote
Hashing and encryption	HashSha1, HashSha256, HashSha512, HashMd5, HashHmacSha1, HashHmacSha256, HashHmacSha512, HashHmacMd5, EncryptAes256, DecryptAes256
Users, groups and definitions	UserNameFromId, CurrentUserHasRole, GetGroupMembers, IsMemberOfGroup, DefNameFromId, DefIdFromDefName, FieldNameFromId, FieldIdFromName

General rules

• Each rule works on the result of the rule before it (see Modify Value).
• Every parameter is an expression. For a fixed value, type it directly into the parameter. A parameter left empty counts as an empty text.
• "Ignoring case" means that upper and lower case do not matter when searching.
• Rules that test something return true or false.
• If a rule fails with an error, the whole expression returns an empty value. Where a rule instead leaves the value unchanged, this is stated below.
• Numbers in parameters and values are written with a decimal point. Positions ("index") start at 0.

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2. Extracting text

Rule	Result	Parameters
TextAfter	Everything after the first occurrence of a text, searched ignoring case. Empty if the text does not occur.	TextBefore – the text to search for
TextBefore	Everything before the first occurrence of a text, ignoring case. Empty if the text does not occur.	TextAfter – the text to search for
TextBetween	Everything between two texts. The start text is searched ignoring case, the end text after it including case. Empty if one of them does not occur. For an optional end, use TextAfter followed by TextBefore.	TextBefore – start text; TextAfter – end text
TextAfterUntilEndOfLine	Everything after a text up to the end of that line; empty if the text does not occur. The usual way to read "Label: value" lines from an e-mail.	TextBefore – the text to search for, ignoring case
TextBeforeFromStartOfLine	Everything from the start of the line up to a text; empty if the text does not occur	TextAfter – the text to search for, ignoring case
NextWord	The word that follows a text	TextBefore – the text to search for, ignoring case
PreviousWord	The word that precedes a text; empty if the text does not occur	TextAfter – the text to search for, ignoring case
NextNumber	The number (optionally negative, with decimal point) that follows a text; empty if there is none	TextBefore – the text to search for, ignoring case
PreviousNumber	The number that precedes a text; empty if there is none	TextAfter – the text to search for, ignoring case
FirstWord	The first word (words are separated by spaces only)	–
LastWord	The last word (separated by spaces only)	–
FirstNumber	The first run of digits (whole digits only, no sign, no decimals). Without any digit the value stays unchanged.	–
LastNumber	The last run of digits. Without any digit the value stays unchanged.	–
Left	The first characters; the whole value if it is shorter. A length that is not a whole number leaves the value unchanged.	Length – number of characters
Right	The last characters; the whole value if it is shorter	Length – number of characters
Substring	A part of the value. A range beyond the end is cut off; a start beyond the end gives an empty value. A missing or 0 length gives an empty value.	StartIndex – start position (from 0); Length – number of characters
IndexOf	The position of the first occurrence of a text (from 0, including case); -1 if it does not occur	SearchText
TextLength	The number of characters	–
RegexFirstMatch	The first match of a regular expression (.NET syntax), or one group of it by name or number. Empty if nothing matches or the pattern is invalid. For all matches use RegexToJArray.	Pattern; Group – may be empty for the whole match

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3. Changing text

Rule	Result	Parameters
Replace	Replaces every occurrence of a text, ignoring case. An empty search text leaves the value unchanged.	OldText; NewText – may be empty to delete
ReplaceCased	Like Replace, but including case	OldText; NewText
RegexReplace	Replaces every match of a regular expression (.NET syntax). The replacement can insert groups: $1, $2, ${name}, $0 for the whole match. Without a match or with an invalid pattern the value stays unchanged.	Pattern (required); Replacement – may be empty to delete the matches
Remove	Removes every occurrence of a text, ignoring case. An empty text leaves the value unchanged.	Value
ToUpper	The value in upper case	–
ToLower	The value in lower case	–
UpperCaseFirst	The first character in upper case, the rest unchanged	–
Trim	Removes spaces, tabs and line breaks at both ends	–
TrimStart	Removes characters at the start. Every character listed is removed (a set, not a sequence: 0 removes leading zeros and spaces). Empty removes whitespace.	Characters
TrimEnd	Removes characters at the end, like TrimStart	Characters
PadLeft	Fills the value at the front up to a total length, for example 7 → 007. Only the first character of PadChar is used; an empty PadChar leaves the value unchanged. A TotalWidth of 0 gives an empty value; one that is not a whole number leaves the value unchanged.	PadChar; TotalWidth
PadRight	Fills the value at the end, like PadLeft	PadChar; TotalWidth
EllipseText	Shortens the value to a maximum length; the last three characters become .... Shorter values stay unchanged. Below 4 the value is just cut. A negative or non-numeric length leaves the value unchanged.	MaxLength
AppendLine	Adds a text as a new line at the end	Value
PrependLine	Adds a text as a new line at the front	Value
RemoveLastLine	Removes the last line. A value with a single line becomes empty.	–
RemoveLine	Removes the line at a position (from 0). A position beyond the end changes nothing.	LineIndex
RemoveCarriageReturns	Removes carriage return characters and keeps the line feeds	–
RemoveLineBreaks	Removes all line breaks; the lines are joined without a space	–
RemoveWhiteSpace	Removes all spaces, tabs and line breaks	–
HtmlToPlainText	Removes the HTML markup and keeps the readable text – for putting a rich text field into a plain text e-mail	–
MarkdownToHtml	Converts Markdown into HTML, for example an AI answer for a rich text field or an HTML e-mail. HTML contained in the Markdown is escaped, not passed through.	–

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4. Tests and decisions

Rule	Result	Parameters
Contains	Whether the value contains a text, ignoring case. An empty search text always gives true.	Value
ContainsCased	Whether the value contains a text, including case	Value
StartsWith	Whether the value starts with a text, ignoring case	Value
StartsWithCased	Like StartsWith, but including case	Value
EndsWith	Whether the value ends with a text, ignoring case	Value
EndsWithCased	Like EndsWith, but including case	Value
TextEquals	Whether the value is exactly the text, ignoring case. Spaces count – use Trim before if needed.	Value
TextEqualsCased	Like TextEquals, but including case	Value
IsEmpty	Whether the value is empty or contains only spaces	–
RegexIsMatch	Whether a regular expression (.NET syntax) matches anywhere in the value; use ^ and $ to test the whole value. false for an invalid pattern.	Pattern
ContainsNumber	Whether the value contains a digit	–
IsValidDate	Whether the value can be read as a date – a date value or text in a culture-neutral format such as 2026-05-31 (not 31.05.2026)	–
IsValidTime	Whether the value can be read as a time, for example 14:30	–
IsValidDateTime	Whether the value can be read as date and time, for example 2026-05-31T14:30:00 or 2026-05-31 14:30	–
TextToLogical	Converts yes, ja, 1 to true and no, nein, 0 to false (ignoring case). Every other value – including true and false – stays unchanged.	–
Not	Reverses a yes/no value: true or 1 becomes false, everything else – including an empty value – becomes true	–
Coalesce	Replaces an empty value with a fallback. A value that is not empty stays unchanged.	Value – the fallback
Conditional	Returns one of two values, depending on whether the current value is true (true or 1, ignoring case). A missing value gives an empty result. Handy after a test such as Contains; for more than two outcomes use a Case expression.	TrueValue; FalseValue

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5. Numbers

Rule	Result	Parameters
MathRound	Rounds the number. If the value is not a number or DecimalPlaces is not a whole number, the value stays unchanged.	DecimalPlaces – for example 0 or 2
MathAbsolute	The number without its sign	–
MathTruncate	The number with its decimals cut off, without rounding	–
MathCeiling	Rounds up to the next whole number (2.1 → 3, -2.1 → -2)	–
MathFloor	Rounds down to the next whole number (2.9 → 2, -2.1 → -3)	–
MathAppendFormula	Appends a formula to the value and calculates the result – the value becomes the left side, for example *1.19 or / 60. A formula that cannot be calculated gives an empty value. Same formula syntax as the Mathematic expression.	Formula
MathPrependFormula	Puts a formula in front of the value and calculates – the value becomes the right side, for example 100 -	Formula
NumberFormat	Formats a number as text with a decimal point. A value that is not a number stays unchanged.	Format – a .NET number format such as 0.00, N2, #,##0 or D5
SecondsToTimeFormat	Turns a number of seconds into a time of day (hh:mm:ss). After 24 hours it starts at 0 again, so it only suits durations below one day.	–

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6. Dates and times

Rule	Result	Parameters
DateTimeFormat	Formats a date or time as text. An empty value stays empty.	Format – a .NET format such as yyyy-MM-dd, dd.MM.yyyy HH:mm or o (MM = month, mm = minute)
DateTimeParse	Reads a text as a date in a given format or culture, for example 31.05.2024. A text that does not fit gives an empty value – combine with Coalesce for a fallback.	Format – for example dd.MM.yyyy or dd.MM.yyyy HH:mm, several separated by \|; may be empty to accept any format of the culture; Culture – for example de-DE; empty for the invariant culture
DateTimeAdd	Adds an amount of time; an empty value stays empty. An unknown unit leaves the value unchanged.	Value – a whole number, negative to go back; Unit – years/year/yy (counted as 365 days), days/day/dd, hours/hour/hh, minutes/minute/mm, seconds/second/ss, milliseconds/millisecond/ms, microseconds/microsecond/mcs
DateTimeDiff	The value minus another date, as a number in a unit – positive if the value is later. Years and months count completed calendar units (as for an age); smaller units keep decimals. Empty if one of the two is not a date.	OtherDate; Unit – years, months, weeks, days, hours, minutes, seconds or milliseconds (also yy, mo, ww, dd, hh, mm, ss, ms)
ConvertTimeZone	Converts a date and time from one time zone into another, including daylight saving time. An unknown time zone leaves the value unchanged.	FromTimeZone; ToTimeZone – for example Europe/Berlin; empty means UTC
DateTimeFirstOfYear	The first day of the year of the date. A value that is not a date stays unchanged.	–
DateTimeFirstOfMonth	The first day of the month	–
DateTimeFirstOfWeek	The first day of the week	–
DateTimeLastOfYear	The last day of the year	–
DateTimeLastOfMonth	The last day of the month	–
DateTimeLastOfWeek	The last day of the week	–
UnixTimestampToDateTime	Turns a Unix timestamp (whole seconds since 1 January 1970, UTC) into a date and time in UTC. A value with decimals – for example a timestamp in milliseconds – stays unchanged; divide it by 1000 first (MathAppendFormula / 1000, then MathTruncate).	–
DateTimeToUnixTimestamp	Turns a date and time into a Unix timestamp (whole seconds since 1 January 1970 UTC). A date without time zone counts as UTC.	–
HumanizeTimestamp	Writes a point in time relative to now, for example "2 hours ago" or "in 3 days"	–
IsDateWithInBusinessHours	Whether the date is a working day of a business hours calendar; false if the calendar is not found	BusinessHours – the id or the name of the calendar
IsDateTimeWithInBusinessHours	Whether the point in time lies within the working time of a business hours calendar; false if the calendar is not found	BusinessHours – the id or the name of the calendar

DateTimeAdd has no unit for months or weeks – mm means minutes. For calendar months, use the Date Time Math expression.

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7. Reading JSON

Rules starting with JObject expect a JSON object ({ … }), rules starting with JArray a JSON array ([ … ]). Choose the rule for the shape the value has at that point of the chain.

Rule	Input	Result	Parameters
JObjectJsonPathValue	object	A single value at a JSONPath, for example customer.name or $.orders[0].number. A nested object or array comes back as JSON text; no match gives an empty value.	Path
JObjectJsonPathArray	object	All matches of a JSONPath as a JSON array, for example orders or $.orders[*].number	Path
JObjectFindElement	object	The property with the given name at the top level (not searched in nested objects – use JObjectJsonPathValue with ..name for that). Empty if it does not exist.	ElementName – the exact name
JObjectPropertyNameAt	object	The name of the property at a position; empty when out of range	Index – from 0
JObjectKeys	object	The names of all top-level properties as a JSON array	–
JArrayJsonPathValue	array	A single value at a JSONPath, for example [0].id or $[?(@.type=='main')].id	Path
JArrayJsonPathArray	array	All matches of a JSONPath as a new array, for example [*].id	Path
JArrayElementAt	array	The element at a position; empty when out of range	Index – from 0
JArrayFirstElement	array	The first element; empty for an empty array	–
JArrayLastElement	array	The last element; empty for an empty array	–
JArrayLength	array	The number of elements	–
JArrayHasElements	array	Whether the array contains anything	–
JArrayContains	array	Whether an element equals the value, ignoring case. Texts are compared without quotes, objects as JSON (spacing does not matter).	Value
JArraySum	array	The sum of the numbers; elements that are not numbers are skipped. 0 for no numbers.	Path – the field inside each element, for example amount or position.price; empty for an array of numbers
JArrayMin	array	The smallest number; empty if there is none	Path – as for JArraySum
JArrayMax	array	The largest number; empty if there is none	Path – as for JArraySum
JArrayAverage	array	The average of the numbers; empty if there is none	Path – as for JArraySum

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8. Building JSON and lists

Rule	Result	Parameters
JObjectSetProperty	Writes a property into a JSON object, overwriting an existing one. An empty input starts a new object. A value that is itself a JSON object or array is written as such; a yes/no value or a number keeps its type; everything else becomes text. Use one rule per property.	PropertyName – must not be empty; Value
JObjectRemoveProperty	Removes a top-level property (exact name) from a JSON object. A missing property changes nothing.	PropertyName
JObjectMerge	Merges a second JSON object into the value: properties are added or overwritten, nested objects merged, arrays replaced. An empty input starts a new object.	Object
JArrayAppend	Adds a value at the end of a JSON array. An empty input starts a new array. Values are written as for JObjectSetProperty.	Value
ConcatJArray	Adds all elements of a second JSON array at the end. An empty input starts a new array; an empty Array leaves the input unchanged.	Array
JArrayRemoveAt	Removes the element at a position (from 0). A position out of range changes nothing.	Index
JArraySort	Sorts a JSON array. Numbers are compared as numbers, everything else as text ignoring case; elements without a value come first.	Path – the field inside each element to sort by; empty to sort by the elements themselves; Descending – true for descending, empty for ascending
JArrayDistinct	Removes repeated elements and keeps the first of each. Only exactly equal elements count as repeated (1 and "1" differ).	–
JArrayReverse	Reverses the order of the elements	–
SplitStringJsonArray	Splits the text at a separator and returns a JSON array of the trimmed, non-empty parts – for example to use a list as the right side of In. An empty separator gives an empty array.	Value – the separator, for example ; or ,
SplitStringJsonArrayKeepEmpty	Like SplitStringJsonArray, but keeps every part as it is – not trimmed and not removed when empty – so positions stay meaningful: a;;c → ["a","","c"]	Value – the separator
SplitLines	Splits the text at its line breaks into a JSON array with one entry per line. Empty lines are kept.	–
JoinJArray	Joins the elements of a JSON array into one text, with the separator between them – the counterpart of SplitStringJsonArray. Texts are written without quotes, numbers and yes/no values as they are, null as empty, and a JSON object or array as compact JSON: [{"val":"a"},{"val":"b"}] with ; gives {"val":"a"};{"val":"b"}. An empty input gives an empty value; a value that is not a JSON array is left unchanged.	Separator – for example ; or ,; may be empty to join without a separator
RegexToJArray	Runs a regular expression (.NET syntax) and returns a JSON array with one object per match. Each object holds the groups of the match – named groups by name, unnamed ones by number, the whole match as 0. An empty or invalid pattern gives an empty array.	Pattern
CsvToJArray	Reads CSV text into a JSON array. Fields in double quotes may contain the separator, line breaks and doubled quotes. With a header, each row becomes an object with the column names; otherwise an array of its fields. All values are text.	Separator – empty means ,; HasHeader – true if the first line holds the column names
JArrayToCsv	Writes a JSON array as CSV text. An array of objects gets one column per property, an array of arrays one column per position. Fields are quoted where needed.	Separator – empty means ,; IncludeHeader – true to write the property names as first line

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9. XML

The XObject and XArray rules expect an XML document. "Root" is the outermost element. A found element is returned as its text, or as XML when it has child elements.

Rule	Result	Parameters
XObjectFindElement	The direct child of the root with the given name; empty if there is none	ElementName
XObjectFindElementWithAttribute	The first direct child of the root with the given name that has the given attribute, as XML; empty if there is none	ElementName; Attribute
XObjectFindElementWithAttributeValue	The first direct child of the root with the given name whose attribute has the given value (compared exactly), as XML	ElementName; Attribute; Value
XObjectGetAttributeValue	The value of an attribute of the root element; empty if it is missing. Navigate to the element first.	Attribute
XObjectXPathValue	The first element an XPath selects, relative to the root element (for example Customer/Name). Selects elements only – for attributes use XObjectGetAttributeValue.	Path
XObjectXPathArray	All elements an XPath selects, relative to the root, as a JSON array – continue with the JArray rules	Path
XArrayXPathValue	The first element an XPath selects, evaluated against the whole document (for example /Items/Item or //Item)	Path
XArrayXPathArray	All elements an XPath selects in the whole document, as a JSON array	Path
XArrayLength	The number of child elements of the root	–
XArrayFindElementAt	The child element of the root at a position	Index – from 0
XArrayFirstElement	The first child element of the root	–
XArrayLastElement	The last child element of the root	–
XArrayHasElements	Whether the root has any child element	–
XmlToJson	Converts the XML document into JSON so the JSON rules can read it. Attributes appear as @name. An element that occurs only once becomes an object, not an array with one entry. A value that is not XML stays unchanged.	–
JsonToXml	Converts JSON into an XML document. Properties starting with @ become attributes.	RootElementName – the element to wrap everything in; required if the object has more than one property or is an array (whose elements become item elements)

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10. Encoding

Rule	Result	Parameters
JsonEncode	Escapes the value (backslashes, quotes, line breaks) so that it can be put inside a JSON string	–
JsonDecode	Turns an escaped JSON string back into its content – needed when JSON arrives as a string inside JSON	–
EncodeBase64	Encodes the value (UTF-8) as Base64	–
DecodeBase64	Decodes Base64 into UTF-8 text. A value that is not Base64 makes the whole expression empty.	–
Base64ToHex	Converts Base64 into hexadecimal (lower case)	–
HexToBase64	Converts hexadecimal (even number of digits) into Base64	–
UrlEncode	Escapes the value for use in a URL query string	–
UrlDecode	Turns an escaped URL value back into its content	–
HtmlEncode	Escapes the value for HTML (<, >, &, quotes) – use it when user input goes into an HTML mail or rich text	–
HtmlDecode	Turns HTML entities such as &amp; back into characters. Does not remove tags – use HtmlToPlainText for that.	–
EncodeBackslashCrLf	Turns real line breaks into the two characters \n (carriage returns are dropped)	–
DecodeBackslashCrLf	Turns \n back into real line breaks	–
EncodeBackslashQuote	Escapes double quotes with a backslash	–
DecodeBackslashQuote	Turns backslash-escaped quotes back into quotes	–

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11. Hashing and encryption

Rule	Result	Parameters
HashSha256	The SHA-256 hash, as upper case hexadecimal	–
HashSha512	The SHA-512 hash, as upper case hexadecimal	–
HashSha1	The SHA-1 hash, as upper case hexadecimal. Weak – only for compatibility with an external system.	–
HashMd5	The MD5 hash, as upper case hexadecimal. Not secure – only for a checksum an external system requires.	–
HashHmacSha256	The HMAC-SHA256, as Base64 – what API signatures usually need (add Base64ToHex if hexadecimal is needed)	Key – the secret as text
HashHmacSha512	The HMAC-SHA512, as Base64	Key
HashHmacSha1	The HMAC-SHA1, as Base64	Key
HashHmacMd5	The HMAC-MD5, as lower case hexadecimal (unlike the other HMAC rules)	Key
EncryptAes256	Encrypts the value with AES-256-GCM and returns Base64. On failure the value stays unchanged.	Key – any text; Nonce – exactly 12 characters (12 bytes in UTF-8)
DecryptAes256	Decrypts a value produced by EncryptAes256. On failure the value stays unchanged.	Key; Nonce – the same as for encryption

For administrators: Do not write keys and nonces into the definition itself. Take them from global values, so they are maintained in one place.

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12. Users, groups and definitions

Rule	Result	Parameters
UserNameFromId	The display name of the user whose id is the value (the id as returned by CurrentUserId). Empty if the value is not an id.	–
CurrentUserHasRole	Whether the signed-in user has the role named by the value – its id or its name (ignoring case)	–
GetGroupMembers	The members of the group whose record id is the value, as a JSON array of the record ids of the users' profile records. Empty array if the value is not an id or the group has no members. The read limits of the current user apply. Usable as the right side of In.	–
IsMemberOfGroup	Whether the user whose profile record id is the value is a member of a group. false if the value or the group is not an id. The read limits of the current user apply.	GroupRecId – the record id of the group
DefNameFromId	The name of the definition with the given id (its display name, or its internal name if it has none). Empty if no definition of that type has the id. Does not resolve fields – use FieldNameFromId.	DefType – the type of the definition, for example EntityDef, QueryDef, ActionDef (Entity also works)
DefIdFromDefName	The id of the definition with the given name (internal or display name, ignoring case). Empty if nothing or more than one definition matches – an ambiguous name is never guessed.	DefType
FieldNameFromId	The name of the field with the given id. Empty if the entity or the field is not found.	EntityIdOrName – the entity: its id or name (prefer the id)
FieldIdFromName	The id of the field with the given name in an entity. Empty if not found or ambiguous.	EntityIdOrName

Group rules work with the entities that hold groups, user profiles and group memberships in your installation. If no such entities exist, GetGroupMembers returns an empty array and IsMemberOfGroup returns false.

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13. Related pages

• Modify Value
• Expressions – overview
• Business hours