Hi. I might help you. I cannot confirm that will work, but you can try.
First, don't copy all data from publishable.txt to publish.txt (I don't know the reason, but it seems to be problem with many commands).
Look these datarefs (commands), I hope you need that commands for "speed" encoder (push and pull) :
try put it these command strings in publish.txt
(path: X-Plane 11\Aircraft\FlightFactor A320 ultimate\data\publish.txt)
sorry for my English, I hope you will understood me.