Hi,
I need to add a new profile question, which is the year- from 1960 to 2016. Because the maximum number of choices is 31, I cannot go for single-choice answer type and apparently I need to use text instead. However, I would then need to make sure the value entered by the user is a valid four-digit number (the year). May I ask which file(s) I need to modify for this purpose?
Thanks.