I use extract with regex to control the input of a field. It works fine but once I have the pattern and I continue with caracters Bubble does not seem to bother. It looks like it checks if the pattern is there, not if the patern is only there. Has this something to do with my regex pattern?
(A|a)\d\d\d\d\d\d\d\d
In my understanding this pattern is saying any alphabetic character plus 8 numbers.