Camera Trigger Help

Ok, I've got a problem with a trigger I'm trying to do (obviously). This is what I'm trying to do -- The unit will move UP when the player presses the UP arrow key... The camera follows his facing degree all the time. So if he was facing 60 degrees, the camera would go to 60 degrees. I got him moving up right (by making him move towards his facing degree). I got right and left done, but the tricky thing is, is down. I can't seem to find a way to make it go backwards. (not make him move backwards, just chance his facing degree to the opposite of what it is right now). I was wondering if FacingDegree - 180 would work?

Got it to work, n/m. >;}