Devo8s Mixing headtracking input with switches

Hey Guys.

ok so here's the deal im currently flying a
DJI F550 with the whole nine yards on it osd ground staion zenmuse gimbal etc etc

since the devo 8s does not have any analog input to control my gimbal with im using the rudder dr switch to flip my gopro down and one of the trim switches to move is manualy up and down.

what I would like to do is to mix a other input in there from my head tracking goggles.

is this possible ?
the goggles are connected to the ppm input port on channel 1 and 2
but since the zenmuse can only tilt I will be using only one channel

nevermind got it working lready

Would you care to share how you did it?

I'm also trying to set the upper left trim button on my 8s to controll the up and down motion on my camera. And while i can get it to move the camera, i can't get it to stop once it gets moving. It just keeps going in one direction and pushing the trim button the other way won't stop it.