Use Button to change Midi Channel

HI comunity, I'll try to explain what I need, here attached is my code that works with a midi device on channel 1, I will like to add for example button 13 to change channel 1 to channel 2 so I can use other device, also this will change "cont char program" that has the defult banks names, so basically I turn on and work with channel 1, but if I press button 13 midi channel will change to number 2 and also changes the bank names (that I will put by hand) if i need to go back to channel 1 I press again button 13 and then again going back to "const char program_" original that is in the code attached

any ideas?

Studio_Quad_Beta.ino (15.9 KB)