Reaction inc/dec Knob with encoder

Hello.

I want to use one encoder (there are actually two, left and right) for panning in split mode.
I don’t know what action I have to define in the reaction so that when turning an absolute encoder (1-127) the value increases or decreases by 0.1.

I understand that I should use “self.song().view.selected_track.mixer_device.right_split_stereo.value”
but I don’t know how to continue.

THANK YOU