Mapping virtual faders to midi faders

I am trying to map virtual faders to my apc mini faders without MPC tools.
I’ve done some playbacks to my apc mini buttons with midi macros.
But I don’t know how to map faders. Or do I need to program some LUA??
Anybody give me some clues!!! Thanks.
MA2 and Avolites Titan support midi faders mapping. But Onyx doesn’t??
Is it right??