Good to know someone else is working on these valves, I have been playing with them for a while but hadn’t even got as far as you by the looks of it.
The problem I had was that I was only able to get the valve to change value when awake. (ie press a button then send the command from ST).
If the device is not awake the slider looks like it is working but does nothing to the device, and when you exit and go back into the device the slider is back where it was before you moved it.
my understanding is you have to que the commands and get the device handler to respond to a wakeupnotification event. However my groovy coding is not up to the task.