Setting up AD inputs in FSBus Router

Hi all..I am setting up pots in the FS router but can't figure out how to set them up so they work properly. I am using FS AD for pitch, aeileron, rudder trims and flaps. They all flashed and are recognized. My problem is: When I turn my wheel one way the pitch wheel indicator goes down and when I turn my trim wheel the other way the pitch still goes down. How can I set it up so when I turn the wheel forward the pitch goes down and when the wheel goes backwards pitch goes up.Anyone got any ideas please ?Many thanks...JB