Can someone help me with setting up MIDI channels in OMS 2.3.8 and Logic 4.7.0 running on OS 9.1?

I've got a Roland SH-32 (4 parts), a Yamaha SY22 (8 parts) and a Roland TR-626.
I set up the instruments as this:
SH-32: MIDI channel 1
SY22: MIDI channel 2
TR-626: MIDI channel 3

This only works for one track (part) for each instrument.

However, with these settings I am not able to work in Logic with multiple tracks for the SH-32 and the SY22 .

I hope you can help me, because I'm pretty stuck!

Kind regards,

Edwin