Hi zoomkat
Nice to hear from you.
You are right. I started from simple code (your code) and modified it. I even can play with 10 buttons and it works.
I tested IR signal separately and combine them now.
As I said earlier, with 2 function, it works. Then started with 3 functions and above. I don't think it is coding problem as it is simple and works. I think it is a bug in the library. That is the case, it is beyond my capability.
Too bad your pc is down, otherwise you will know my problem.
Anyway I am still trying to solve this problem.
Thanks.