The range end points should be entered on the first and second line of the Valid Values input field. Enter the low end point first. Type can be RE , indicating a regular expression. Enter a regular expression on the first line of the valid values input field. You can customize the error message displayed to form submitters using the Validation Error Message input field.
Relationships Related fields allow for conditional comparisons for data validation.
Based on an exact match for the current field, you may require a particular value for a different field. The Related Field's Value , one triplet per line in the Relations input field. You can replace the default error message displayed to form submitters when the relationships aren't met. To do so, enter the custom message in the Related Fields Error Messages input field. You can limit the number of occurrences of related fields submitted with a single form.