Validation setting for response having combination of number, special char and letter

Hello, I would like to set validation setting in one question such that enumerator has to enter information in following format


where x is digits

  • special char
    C- letter

how can i set such validation in response

You can use a regex() to check the entered string matches the required format. Try something this:


This a related thread about regex’s.


6 posts were split to a new topic: Creating a validation for only the first character/text using regex