Citation X Help

OK I got this CX recentley
. She is a nice bird but how do I get the autopilot to work? The flight plan gets entered into the computer and everyhting looks good for a direct GPS flight (to see if I can get her workin) and I engage AP and Nav but it seems to just fly in a straight line, it wont turn, I slewed off course to see if it would turn back and nope. So a little help with that and also where do I set the Alt for the autopilot? Seems like a primitive AP system to me but im shure theres more to it. 
Thanks,
Gunner


Thanks,
Gunner