If you are using TPV5, you can change the datastream to include anything you want, you just have to set up the .bin for it, which is also much easier if you set up the .xdf for changing the commanded datastream. It is easier to change some of the engine data to trans data, as long as you know the address of the data you want.
http://www.gearhead-efi.com/Fuel-Inj...the-DataStream
The referenced objective was probably a much harder one to properly figure out, than what you want to change.
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