It's gear dude. Don't necessarily pay attention to the numerical value. Look what the engine speed is doing, you can see where he is going through the gears, and yup there's step changes in the 'gear' parameter.
Aducated, did you change the gear ratio on the bike? Or is there a gear ratio entry in the software? And based on your speed trace you were shifting it like a tractor or maybe a Harley! Get on it man! Were ya trying not to spill your Starbucks or something?!