I want to do regex (., ‘[0-9] 11} $’) but not type more than 11 digits.
Welcome to the community, @mdnurnabi! Try the following regex code:
regex(., '^[0-9]{11}$')
Note: You will have to make the question type as text
and appearance as numbers
. For more regex code, please visit our support article Restricting Text Responses With Regular Expressions.