Custom check on fields

[bluantinoo]

Hi,
I know it may sound as a weird request, but I try to ask anyway:
is there a way to add some custom check on specific fields?

For example: I have to ask for a “fiscal code” that is a aphanumeric value. This value must follow a specific format and is constructed by other users details (like born date, place, ecc…)

is there a way to make a check like this on a user meta pro form?

[bluantinoo]

Ok I found this file in User Meta Pro plugin where it seems that all jQuery Validation Engine rules are been set:

wp-content/plugins/user-meta/assets/jquery/validationEngine-en.js

I could add here my regex rules, but how link them to my custom field?

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