Hi Martin,
thank you for the response.
So here is an example of the .txt file for an external module synth, the TR-Rack by Korg.
[g1] Combi Bank (C)
[p2, 0, 0, 2] TrinitySoundRack
[p2, 1, 0, 2] Power{HIT}Split
[p2, 2, 0, 2] UnderWater*Parade
[p2, 3, 0, 2] EAuditorium+MIDI
----^-----This is the patch number value to switch 0-127
--------^------ This would be the bank value to switch from various banks on a synth. (works fine in other synths I own)
The way I do this is setup is from the external instrument feature here:

Here is the exact hex code for switching.
(12)Mode change
(F0,42,3g,3B,4E,0m,xx,F7)
g=Global channel value
m= Mode change Value 0-Combi/2-program/
xx = Program number of the Given mode
so if you want to select combi mode and your rack is on global channel 1 and you simply want to select combi number 1
F0,42,30,3B,4E,00,00,F7
for program mode,where 0m should be enter 02 instead
F0,42,30,3B,4E,02,00,F7
Now is their a way to send a hexadecimal command via the device management system already in external instrument editor within the .txt file? Basically I want all my synth names, patches accessible on the TR-Rack in presets, which up until now has only been the 4 combo banks due to not being able to switch banks from combo to programs. Their is no midi switch to switch banks on the TR-Rack, so ultimately Im looking to somehow switch via hex in the preset environment.
Thanks for any help you can provide!
Best,