I'm sending a program change to bank 1 / combo #10, this should change to combo #11, right?
I'm not sure what CC you send...
First select the combo bank.
CC #0 = 1 (You will select a combo bank).
CC #32 = 0-7 (select combo bank number).
Then program change actually load the combo.
Because the Preen Combos starting at 1 instead of 0.
No every bank and presets starts at 0. Specialy for the midi compatibility.
I just sent
CC#0 = 1
CC#32 = 0
(In some DAW such as studio one you have to enter 1*128+0 = 128 in bank).
And then program change correctly loaded the combos.