Controlling AU with external gears

Hey music makers :blush: !

I would like to control my AU with external hardware, like MIDI pots, faders and so on.

From what I understand, we can do it with MIDI learn if the AU supports it. But the only one I found is Turnado.

Why not use the AU parameters that are exposed and be able to assign a MIDI cc to that ? Like AUM is doing ?

Or am I missing something ?

Thanks for your excellent work Cubasis team !