Hello everyone, i want to ask a simple question:
To make a verification on a field entry, i need to insert some lines of php code but i don't know where and how.
I need to check if a written VAT number is in the correct form,
and i found a simple php code that can check it.
How can i add the php code to a field? Is there an easy way? Do i need to upgrade my CB to Pro to access some features like these?
Thank you in advance for your support
