@streamfuchs : I may have a little something for you.
You may have seen I released an IFTTT program for both MIDI and OSC.
I modified it today (now in version 0.3) so that is can use internal counters, and files with MIDI or OSC data lists.
On an incoming MIDI or OSC message with a matching condition, a counter will increment or decrement, the file's MIDI or OSC data, indexed by the counter will be sent to either MIDI or OSC.
That means... each time the program received and recognizes a 'bank up' MIDI command, it can send a MIDI SYSEX dataset indexed by a counter that will have been incremented. Similarly, each time the program received and recognizes a 'bank down' MIDI command, it will sen a MIDI SYSEX dataset indexed by a counter that will have been decremented. As counters can be shared between several matching conditions, bank up and bank down can act on the same counter, effectively 'navigating' through a list of SYSEX messages that can for example contain a list of scribble colors
for bank 1, 2, 3, 4...
You can launch multiple instances of the program and this way manage separately the MIDI out to different XTouch devices or extenders.
Tested this afternoon, not with XTouch (don't have this) but manually using MidiOX, a series of virtual MIDI ports and a WING desk.
Maybe this can help you.
-Patrick
