What language? I'm not sure, but I think the latest change said that if you speak a language on the "critical" list, and pass the DLPT to a certain level, you will receive the pay no matter what your billet. (I didn't mention it earlier because I'm not sure and most folks aren't that proficient in the critical languages)
Be careful what you ask for, I know of at least one guy yanked out of the cockpit to put his language skills to work.