There is already a CTF map with the name Converge from 2010. You will want to pick another name, otherwise you may have filename conflict issues (plus it will be confusing for anyone to look up the old map). Thread (no longer has download or images, it's an old thread) Download
You could call the map ' ctf_elevator_maze ' I'm anti-elevator, jump pads are somewhat tolerable since they're fast, but with elevators there's a lot of waiting, and players can never fully know what will be atop the elevator when ascending, giving Engineers even more of an edge than they usually have on ctf maps.