Data constraint regex to not allow pure number in a string field

[mathieubossaert]

Hi @Olimpia
please check the answer on your first post and try to not duplicate your questions

Allowing only alphabetic letters in a text answer

Hi @Olimpia, I think you missed an quantifier in the regexp, something like [A-Za-z]* if an empty string is allowed or [A-Za-z]+ if at least one letter is required This resource is quite useful : https://blog.cartong.org/2018/03/15/all-about-regex-in-xls-form-when-how-and-examples-in-the-humanitarian-and-development-fields/ And this documentation page : https://docs.getodk.org/form-regex/