you're right, but this code is mixed I know, for me to try and see the result, it's not done, still working hard to build a real project, add and delete new lines to finde out how things works, the Strings C1 and off are just to compare to have a function to light the led goes on when SysEx message received and it works when i send from PC through the serial terminal, I know I'm a little confused, but I do not want to give up, i will continue study on it.
thanks so much for the tip, i will check further and write the result here then.