How can I add custom validation to a custom field in suitecrm 8?

I have a requirement to validate a custom field named movil

The field value can accept any of these formats

91xxxxxxxxxxxx
+91xxxxxxxxxx
0091xxxxxxxxxx

How can I add custom validation to a custom field in suitecrm 8?

What is your standard format

Hello. Thanks for answering. Sorry I don’t understand the question

You could set number to be 10 digits long from studio

I had asked @clemente.raposo about Field masking in v8 but still its not supported.
Can we have an updated documentation on how to add field masking or custom components to add this customisation.