How do I make it so a sound can only be played once?

I have a collectible system in my game, and i want it so the sound for picking up the collectible only can be played once for that layout.

simple , create global variable SoundPlayed , make it 0. When the sound played set the variable to 1. Also set the sound to play only when SoundPlayed is 0.

Thanks, didn't think about doing it that way.