I have a text entry question which needs to have the following format:
-it needs to be exactly 6 characters long
-The first character can only be one of the letters p,m.l,k,n (both uppercase and lowercase are fine)
-The second character can only be a number
-The next three can only be letters (any letter, uppercase or lowercase)
-The last one has to be a number.
How can I set this on the survey platform?