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Look for ConfiForms Form Field Definition macro parameter

Warning

Please note that there is a bug in Confluence editor with rendering placeholders for macros that have {} in their parameters.

Something like

Image Removed

or

Image Removed

(depending on what is inside the {})

This could be safely ignored - this affects only rendering of a macro placeholder in the editor

Since version 1.4.17 you can use the reserved word [unique] in order to check for field's value uniqueness. See examples below.

Validation	Regular expression
Value is empty	^\s*$
Value NOT matching something (Allow everything, but 'something'. Useful when you would like to apply validation on dropdown fields)	^(?!something).*$
Value is not empty	^(?=\s\S).$
Value is alphanumeric	^[a-zA-Z0-9]*$
Value contains only letters	^[a-zA-Z]*$
Value length (1-20 chars)	^.{1,20}$
Only numbers	^[0-9,;]+$
Checks if the field's value is unique within the dataset	[unique]
Checks if the field's value is unique within the dataset and ensures it's length (1-20 chars)	^.{1,20}$[unique]
Allow only PDF files (files with "pdf" file extension)	.*?\.pdf
Starts with upper case letter followed by 9 numbers	[A-Z]{1}\d{9}
Starts with 2 letters, upper or lower case and followed by 6 numbers	[a-zA-Z]{2}\d{6}