Constrain year of birth using regex

Hi, I am trying to use regex(., ‘^[1935-2006]{4}$’) to limit the entry of year of birth between 1935 to 2006, but it didn’t work. Any thoughts? Thanks.

@mabdulkareem, you could do it as shown in the image shared below:

In the survey tab of your xlsform:

Data entry screen as seen in Enketo: when date is entered outside the range

Data entry screen as seen in Enketo: when date is entered within the range

Data entry screen as seen in Enketo: when date is entered outside the range

Reference xlsform:

Regex_Constraint.xlsx (10.0 KB)