How to Midi-control the Cue Send Level?

Could someone explain how to control the level of a cue send with a midi controller?

I am setting an Akai MPD32 to control several parameter of the Cubase mixer.
I was able to map the MPD32 fader to the Cubase-Mixer Fader and also the MPD32 buttons to the Cubase Mixer mute buttons.

With the Akai factory Software Preset File XML, the MPD32 knobs control the pan of the Cubase Mixer track but I would like to assign the MPD32 knobs to the Cue Send Level of Cubase.

BTW is there a list of all the parameter of the Cubase Mixer that are assignable to a Midi Controller?

Best regards