I need help with a field validation

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I am using New Responsive Forms.  I have a business requirement to validate/mask a text field.  I am not sure if it would be easier to use a Text Mask or Regular Expression. Below are the requirements.  Can anyone help me with this?

  • Text Field called “Board Item No”
  • Format:
    • First part is limited to 2 digits (can be 1 digit)
    • Second part is limited to 4 digits (can be 1, 2, or 3 digits)
    • First and second parts are separated by a dash (-)
  • Example of valid values
    • 7-2
    • 23-2222
    • 1-123







Best answer by Chris_Ben 14 May 2024, 23:25

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Userlevel 6
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The text mask won’t work in this case because it doesn’t cater for the length of digits e.g. where you allow 1 or 2 digits before the dash.  A regular expression such as the below would do the trick though:


This one expects 1-2 digits then a dash then 1-4 digits.

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@Chris_Ben  - Perfect.  Thank you!