Zip code validation on registration.

[tega]

Hello,

I've looked everywhere and didn't find anything like this. I would like to force the users that register using vm registration page, to introduce the zip code on the exact format used on my country which is I xxxx-xxx (4 numbers a dash and 3 numbers). I know the regexp is \d{4}-\d{3} but I don't know where to put it. Ive found a similar post but was for VM2 to edit a file that doesn't exist anymore on VM3. Also found a lot of plugins and extensions but all of them what they do is check the zip code on the shipping methods.

Any suggestions?

[Studio 42]

Put a javascript in the cart view and you enable/disable the confirm button depending the validity of the ZIP code