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Throughout the documentation we refer to data types that can be used in the expression parser and its functions and field codes.

Data types define what kind of data e.g. a function needs as an input and what you should expect as an output.

Data types overview

Data typeDescription

TEXT

This type represents any kind of text or character string including all kinds of select and multi-select fields

NUMBER

This type represents numeric values, and is also used to store date, time and date-time values. Learn more about Dates and times


If you need the output as text, simply add % in front of the field code or directly insert the field code as text.

LIST

  • Number list: This type represents a collection of numeric values returned by various functions. The size may vary from 0 to any number of numeric values.
  • Text list: This type represents a collection of text values returned by various functions. The size may vary from 0 to any number of text values.
  • Issue list: This type represents a collection of issues. The size may vary from 0 to any number of issues. It is returned by issue selection of filtering functions.

Learn more about Lists.

If you need to "flatten" the list, or simply convert it to a text, to be written into any field, comment, etc., make sure to have a look at the toString() function!

BOOLEAN

Some operators and workflow functions return a logical, or boolean, value of true or false. Apart from the conditional operator, this data type is typically used when writing expressions in the Logical mode.


Casting (converting) data types

Casting (or transforming) data types is very important throughout all functions provided by JWT.

To be able to set, transform or calculate values it might be necessary to turn a text value to a number, a number or a timestamp to a text, and even individual text or number values to a list.

The following functions will help you to achieve that.

Available functions

Function nameShort descriptionOutput
issueKeysToIssueList()

Converts a text containing issue keys to an issue list.

ISSUE LIST

toLogicalValue()

Converts a text and lists to a logical value.

BOOLEAN

toNumber()Converts a text to a number.

NUMBER

toNumberList()

Converts text to a number list.

NUMBER LIST

toString()

Converts numbers and lists to plain text.

TEXT

toStringList()Converts text to a text list.

TEXT LIST

Whenever you write a numeric term at the right-hand side of the + operator or a comparison operator like = , and the left-hand side is occupied by a text term, JWT will automatically transform the right-hand side term into a text toString().

OperatorExample
+

"His age is " + 30 is equivalent to "His age is " + toString(30)

= (any comparison operator)

"30" = 30 is equivalent to "30" = toString(30)

If you still have questions, feel free to refer to our support team.