Whats wrong with my script?

[Sennep]

Again i have a script question (is there a thread for that?).

void OnStart()
{
AddUseItemCallback("", "bedroomkey", "mansion_1", "UsedKeyOnDoor", true);
AddEntityCollideCallback("Player", "area_darkmusic", "PlayDarkMusic", false, 1);
AddEntityCollideCallback("Player", "area_darkmusic", "StopDarkMusic", false, -1);
}

void StopDarkMusic(string &in asParent, string &in asChild, int alState)
{
StopMusic(3, 0);
}

void PlayDarkMusic(string &in asParent, string &in asChild, int alState)
{
PlayMusic("04_amb.ogg", true, 1.0f, 3, 0, true);
}

That is the beginning of my script. The point is that i want to have music, but only when you are in a special area. The music doesn't go away when you exit area.