Jetracer dosen't respond to gamepad mouvements, steering and throttles values

[MounaSamaali]

hello, I'am starting controlling the jetracer for the first time. However Jetracer doesn't respond to steering and throttle values coded in python with these lines :
car.steering = 0.4
car.trottle =0.2
and also the jetracer dose not respond to the gamepad mouvements, I had theses errors on coding.

**__### [IndexError Traceback (most recent call last)
in
----> 1 left_link = traitlets.dlink((controller.axes[1], 'value'), (car, 'steering'), transform=lambda x: -x) # link controller 0.5 * controller axes 0 value to car steering
2 right_link = traitlets.dlink((controller.axes[5], 'value'), (car, 'throttle'), transform=lambda x: -x) # link 0.3 * axes 1 value to throttle_
IndexError: tuple index out of range
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please any help for controlling the movement of the jetracer,

Thank you in advance
Mouna SAMAALI