GamePad Camera rotation with right stick

Hi Guys
dont know if this is the right place to ask (first time i havent found an answer in the forums and had to ask)

i have advance camera in orbit mode and want to control the camera yaw with the gamepads right joystick, putting the stick full right will rotate the camera continuously left, and full stick left will continuously rotate the camera right.

i can get it to rotate, but only when the stick moves, not continuously when the stick is fully pushed,
any ideas what $advCamera::Yaw = ....... i need to do to get it to rotate continuously?

thanks for any help, this has been driving me crazy

Neil