MIDI Library and HIDUINO Sysex

Hello,
i flashed the ATMega8u2 on my Arduino with the HIDUINO_MIDI_SYSEX Firmware.
This seems to work.

When I send sysex Messages from PC to Arduino. Arduino gets it and sends a callback. Using MIDI Library.
But I can't turn off the callbacks.
Any Ideas what is wrong with my code?

#include <MIDI.h>

const int buttonPin = 2;
int buttonState = 0, oldstate = 0;  

void SysEx(void)
{
  byte data[6] = {0x7E, 0x10, 0x20, 0x30, 0x40, 0x50};
  MIDI.sendSysEx(6, data, false);
}

void setup() {
  MIDI.begin(MIDI_CHANNEL_OMNI);            
  MIDI.disconnectCallbackFromType(SystemExclusive);
  pinMode(buttonPin, INPUT);
}

void loop() {
  
  if (MIDI.read()) {             
    switch(MIDI.getType()) {		
      case SystemExclusive:             
	SysEx();	
        break;
   
      default:
        break;
    }
  }
  else
  {
    buttonState = digitalRead(buttonPin);
    if (buttonState == HIGH && oldstate == LOW) {     
      MIDI.sendNoteOn(1, 1, 10);
      oldstate = buttonState;
    }
    if (buttonState == LOW && oldstate == HIGH) {        
      MIDI.sendNoteOff(1, 1, 10);
      oldstate = buttonState;
    }
  }
}

Tank you!

Theme can be closed 8)
I forgot to turn midi throughput off

For everyone who have the same Problem:

Add MIDI.turnThruOff(); to your Setup function!

Thread closed!