Cubasis 3.3 midi control

Cubasis Ver. 3.3 midi learn…
I’m using a Morningstar midi controller with many apps and devices.
Trying to trigger the transport commands in Cubasis, I’ve only been able to trigger the “back to beginning” button.
I’m sending CC1, 2, and 3 from the controller, and they are recognized by Cubasis in midi learn mode. Any of these CC work with the back button, but nothing works with play/stop or record buttons.
Any suggestions? Thanks