I am attempting to create a new service offering which requires one of the fields to have 17 characters before proceeding. I need the form to not allow the user to submit should the specific field have less than 17 characters, and to display an error message along with it.
I've copied the format of the previous HEAT admin's ticket that he created before leaving, however I can't get the validation part to work, my form still allows the user to submit even without 17 characters.
Is there a simple expression to do this?
Alternatively I'm happy to provide screenshots of what I have so far!