Over the years I have found that many controllers (my guitar synth(s) as well)
do things in a 'live/‘performance mode’ that do not output to MIDI.
What comes to mind are arpeggiators etc;
and from yer post it also looks like in this case
the ‘ribbon’ thang may not output to MIDI.
1- Check the ‘MIDI Implementation’ chart
(usually on the last page of the manual) of the KronosX
to see if what you are trying to do is even possible via MIDI.
2-If that info is not there, then check with the KronosX folks
to see if MIDI output of the ‘ribbon’ is possible at all with that specific ax.