Fade out only if sound is already playing

[Salitehkat]

HI,

I have two events.
Event 1: sound must fadeIn
Event 2; sound must fade Out.
The problem is that if i trigger Event 2 before Event 1 the sound starts playing in order to do fade out.
How can I control that the fade out only happens if the sound is already playing (only if event 1 has been triggered)?

I am asking here cause I believe FadeOut considers only if the sound is already playing. Sorry if I am wrong and thanks for any help.