Yeh I think so press the GLB/Media knob go to midi and scroll to
External Setup select this then scroll way down until you get to 102
this seem to be something you can setup yourself to assign CC to the knobs .
Aha! THank you! I've meanwhile discovered that the same can be done with the knobs thru the program setting - no real need to set things to 'external'. This is quite a learning curve for me...