stuck autopilot knobs in default 747s

[meimes]

I'm not being able to set parameters for both 747. All others aircrafts seem to be fine, but in these two auto-pilot knobs knobs seem to be stuck, or there is a trick I didn't grasp.
I can see the arrows around them, but numbers don"t change.
In fact, many others like radios knobs aren't also working, either on VC or in regular 2D cabin working

[MdMax]

Hello !

Just hold the mouse button and move the mouse.

You can learn here how to use 3D manipulators in X-Plane:

http://www.youtube.com/watch?v=0cWQoFqxNa4

http://www.youtube.com/watch?v=HfHuIyRSFhA

Happy flying !

[meimes]

GINGO!! Thanks very much now I see