String & DateTime Activities

Manipulate text — search, replace, split, join, format, and validate with regex — and perform date/time arithmetic. 9 String activities and 4 DateTime activities cover the most common text and date workflows.

String Replace

Replaces all occurrences of a substring within a string.

Parameter	Type	Required	Description
Input	String	Yes	Source string
Find	String	Yes	Substring to find
ReplaceWith	String	Yes	Replacement text (empty string to delete)
CaseSensitive	Boolean	No (default: false)	Match case exactly
OutputVariable	String	Yes	Variable to store the result string

String Split

Splits a string by a delimiter and returns the parts as a StringArray.

Parameter	Type	Required	Description
Input	String	Yes	Source string to split
Delimiter	String	Yes	Separator (e.g., `,`, `\|`, `\n`)
OutputVariable	String	Yes	StringArray variable to store the resulting parts

String Join

Joins a list of strings into one string with a separator.

Parameter	Type	Required	Description
InputCollection	StringArray / List	Yes	Collection of strings to join
Separator	String	Yes	Separator to insert between items (e.g., `,` )
OutputVariable	String	Yes	Result string

String Contains

Checks whether a string contains a specified substring. Returns a Boolean.

Parameter	Type	Required	Description
Input	String	Yes	String to search in
Substring	String	Yes	Text to look for
CaseSensitive	Boolean	No (default: false)	Case-sensitive match
OutputVariable	String	Yes	Boolean variable — true if found

String Trim

Removes leading and trailing whitespace (or a specified character) from a string.

Parameter	Type	Required	Description
Input	String	Yes	Source string
TrimChar	String	No	Character to trim (trims whitespace if omitted)
OutputVariable	String	Yes	Trimmed result string

String Format

Formats a template string using positional placeholders {0}, {1}, etc. — similar to C# string.Format().

Parameter	Type	Required	Description
Template	String	Yes	Template with positional placeholders, e.g. `Hello {0}, your order {1} is ready`
Args	StringArray / List	Yes	Values to substitute into placeholders (index 0, 1, 2 …)
OutputVariable	String	Yes	Result string

workflow

1	String Format:
2	Template: "Hello {0}, your order {1} is ready."
3	Args: ["{customerName{'}'}", "{orderId{'}'}"]
4	OutputVariable: "message"

Regex Match

Applies a regular expression to a string. Returns whether it matched and optionally extracts capture groups.

Parameter	Type	Required	Description
Input	String	Yes	Text to search
Pattern	String	Yes	.NET regex pattern
OutputMatchedVariable	String	No	Boolean variable — true if the pattern matched
OutputGroupsVariable	String	No	StringArray variable containing capture group values

workflow

1	Regex Match:
2	Input: "{invoiceText{'}'}"
3	Pattern: "INV-\\d{6}"
4	OutputMatchedVariable: "isFound"
5	OutputGroupsVariable: "matches"

Regex Replace

Replaces all regex-matched substrings in a string.

Parameter	Type	Required	Description
Input	String	Yes	Source string
Pattern	String	Yes	.NET regex pattern
Replacement	String	Yes	Replacement string (supports `$1` group references)
OutputVariable	String	Yes	Result string

Regex Is Match

Returns a Boolean indicating whether the input fully matches the pattern. Shorthand for Regex Match when you only need the matched flag.

Parameter	Type	Required	Description
Input	String	Yes	Text to test
Pattern	String	Yes	.NET regex pattern
OutputVariable	String	Yes	Boolean variable — true if the pattern matches

Get Current DateTime

Returns the current date and time.

Parameter	Type	Default	Description
Utc	Boolean	false	Return UTC time instead of local machine time
OutputVariable	String	—	DateTime variable to store the result

Format DateTime

Converts a DateTime value to a formatted string using a .NET format string.

Parameter	Type	Required	Description
Input	DateTime	Yes	DateTime variable to format
Format	String	Yes	Format string, e.g. `yyyy-MM-dd`, `dd/MM/yyyy HH:mm`, `MMMM d, yyyy`
OutputVariable	String	Yes	String variable to store the formatted date

Add To DateTime

Adds (or subtracts) a duration to a DateTime value.

Parameter	Type	Required	Description
Input	DateTime	Yes	Source DateTime variable
Amount	Int32	Yes	Units to add (use negative value to subtract)
Unit	Days \| Hours \| Minutes \| Months \| Years	Yes	Time unit
OutputVariable	String	Yes	DateTime variable to store the result

Parse DateTime

Parses a date string into a DateTime variable using an expected format.

Parameter	Type	Required	Description
Input	String	Yes	Date string to parse (e.g., `28/03/2026`)
Format	String	Yes	Expected format, e.g. `dd/MM/yyyy`
OutputVariable	String	Yes	DateTime variable to store the parsed value