I just tested and it appears that it would work. I tested and the phone number was being stored correctly. Try another test with the debug code I've added and see what you get.
Your friends over here at WebAssist! These Dreamweaver extensions will assist you in building unlimited, custom websites.
These out-of-the-box solutions provide you proven, tested applications that can be up and running now. Build a store, a gallery, or a web-based email solution.