No midi control for L+R input level?

Hey,
So as i use an midicontroller (faderfox pc12) for most functions on digitakt+digitobe, i wanted now to also map the l+r inouts to a knob.

But: there is no midi cc for that!
You can only do it for either L or R, but not for stereo input aka L+R! Well i could use 2 knobs but that is 1.)tedious 2.)unprecise in a live oerformance situation 3.) uses up too much knobs.

Also on digitakt you do have a cc for that, but it still diesnt work properly / is bugged (it still only affects one channel)

Please can u fix that in an update?