"Ha. I did it quite like this today for my 9XR. Afterwards I found this...
I did a video. Its 9XR but if you own a 9X this should be helpful, too."

"Hi Mike. Thanks for getting me started. I had a hard time understanding your setup, so I decided to do my own. The behavior is inspired by yours, but I decided to use software switches for the sake of simplicity.
I think its nice, have a look: 
Link…"