I am having no success Right-Clicking a destination parameter and assigning it to a fader or a knob with my controller (Akai MPK88). I am able to do it in the Stand Alone version; however, I have no success within Logic 10.5. I have an iMac with 3.7 GHz 10-Core Intel Core i9, and 64 GB RAM.
I tried it both within the Vienna Ensemble Player 6 and just instantiating a VI alone with no success. It simply won't allow me to assign one of the controller's faders to Velocity X-Fade. It will allow me to assign the pitch modulation wheel which is odd. If Ivan assign the PM wheel to any parameter, I should be able to assign a fader or knob, right? This problem only happens in Logic Pro.

Any ideas as to what this could be? I need help fast.