Do you have any programming experience at all?
Do you know how to use Regular Expressions?
Are you trying to enter a non-North American telephone number?
I have basic programming experience with VB, html, css and php.
What I'm stuck on if what the expression is to change the fields format.
Also no I am trying to make it have a different format when it is either a UK Mobile or landline.
There are options for custom format for the various provided formats and as a separate format option.