First, you have Mobile and Desktop controls together. Won't work. At least not for me. You need to separate your controls. Put Mobile controls in its own group and Desktop controls in its own group. Then activate/deactivate the group that needs the controls.
i.e: If on Desktop > System set Group Desktop Activated - and - System set Group Mobile Deactivated. And vice versa.
Alpha is for tilt on a flat plane.
Beta is for tilt on the Y axis.
Gamma is for tilt on the X axis.
Second, and this is a doooooope! moment, at least it was for me, you need to check that your device has tilt sensors.
Install THIS on your device and run it. If your device has the sensors it should say 'Accelerometer' and the values will move if it does.
Also, try and decrease the Beta/Gamma values. decrease to around 2. This will allow to check the tilt for very fine movements.
Also, you should change the Greater and Less Than TO Greater or Equal and Less Than or Equal.
Other than that, your events/actions look right to me.
Let me know.