Orvibo allone one function only problem

Hi guys,
I’m currently doing research on implementing orvibo allone (IR Blaster) on my server RPi through openhab (exec binding), and the functioning is doing well. Im using python for the exec binding from: https://github.com/cherezov/orvibo

But i got problem with the ir files, example: I succeeded turn on my AC but failed turn it off , and I also tried to TV, it turns out succeeded in on/off (cause using 1 ir file to turn it ON/OFF on TV) but failed to turn it to mute, instead turn it off.

I dont know how to solve it, anyone had the same issues? or any thought of it? thanks