File Type Form text versus Number

Hello everyone,

Sorry if this topic is repetitive, but I couldn't find any history.😗

I created a form with an Integer field to retrieve my clients' contract numbers.
However, when I'm in the form editor, choose Text or Number for my custom field (FV_customer-contract-number) and enter the following numbers:
500/2414478 -> I don't get 500/
5002414478 -> I get a completely different number
091/1231437 -> I only get 91...
I even cleared my browser cache and created new test clients. In short, I'm lost.😤

All I want is for people to type (without the / or other symbol)
5002414478, and I get the same number in the client file.

Thank you for your help.