How it's Trigger_Music_Event Works?

[Tarack]

I tested Trigger_Music_Event with some Music Event.

But sometimes working, sometimes not. Why?

Example: FINA_CHASE event does working, but MP_MC_START and more doesn't. Why?

But. When i Trigger FINA_CHASE first, and next time when i trigger the MP_MC_START, the MP_MC_START_IS working. What??

Now. How it's working properly?

Thank you!