How to make things happen only in a certain area

[MrWallas]

That's why I don't paste code which I can't understand.
Try replacing PlayGuiSound function with PlaySoundAtEntity and use the area you want as the entity. Seems you're not too experienced, so make sure to check these functions in the engine scripts site.

Yeah, you're right, I'm not too experienced, but I'm capable of learning, I learned how that code, in and of itself, works. I appreciate the suggestion but I really don't appreciate the snarky attitude you seem to be giving me.