Length constraint for numbers

[Mauro_Nharreluga]

Hi guys

Im trying to enforce this number field to accept only 9 digits. Ive tried using text with appearance = number and regex but im not getting the job done.
pls help me on this one

[Kal_Lam]

Welcome to the community, @Mauro_Nharreluga! Have you tried this workaround discussed previously? It should solve your issue:

I am trying to limit the response to have 9 numbers for ID

Maybe you could do the same as outlined in the image shared below: In the survey tab of your xlsform: [Image 1] Data entry screen as seen in Enketo: when a wrong entry is made [Image 2] Data entry screen as seen in Enketo: when a correct entry is made [Image 3] Reference xlsform: Number (Regex).xlsx (10.2 KB)

[wroos]

Hello @Mauro_Nharreluga
why not use an integer field with a simpl numeric constraint like . <= 999999999 ?

[Mauro_Nharreluga]

Thanks @Kal_Lam.
These regular expressions aint easy to deal with but i managed to fix the problem.

[Kal_Lam]

@Mauro_Nharreluga, you should be able to learn more of the regex through our support article Restricting Text Responses With Regular Expressions.