So close! Try putting a += instead of an = on the creatEvent line and you should be good to go. I’ll add double tap down to dim as a preference option in the next device handler update. Sounds like a useful and easy to implement capability.
I believe the keyAttributes 1 value is intended for the release action, but in my testing with the early firmware version it was unreliable at best. When I originally checked, release did show as an action using the HomeSeer controller software, but there may be a good reason I haven’t seen this advertised. I will test enabling this again when HomeSeer releases their next switch firmware update.
I plan on submitting these DH’s after I get a chance to test/update for HomeSeer next firmware update - hopefully soon.