changing wifi regulatory domain with Ubuntu 12.04 on BBxM

I'm trying to change the regulatory domain for wifi on the BBxM
running my pentest/forensics distro based on Robert Nelson's Ubuntu
12.04 for BBxM. If I do an iw reg get it seems to report what I would
expect for US and if I run iw reg set BO|XX or similar it doesn't seem
to change. Anyone have any ideas on what might be happening?