FollowMe issues

Hi all.
I’m trying to set up an extension that will ring first at the extension, and then call my cell phone.
The problem is, I want the voicemail to go back to the PBXIAF system.
I tried using FollwMe on the extension.
I set the amount of time that I want it to ring, set it to hunt, and added my cell phone as 1xxxxxxxxxx#, but once it rings my cell, it won’t go back to the PBXIAF voicemail.
Any ideas?
Also, are there any better ways to have it ring a cell phone when I’m not at my desk?