Piano Music Wont Stop?(goto post #4)

[Tripication]

Ok, disregard the last idea, I am now following this(to a certain extent) http://www.youtube.com/watch?v=EhUjbK_vEhM

and i have this


void OnStart()
{
AddEntityCollideCallback("Player", "PianoStop", "PianoStop", true, 1);
PlaySoundAtEntity("", "general_piano04", "Piano", 0, false);
}

void PianoStop(string &in asParent, string &in asChild, int alState)
{
StopSound("general_piano04", 0);
}


It is suppose to make the piano sound stop playing when i come into near contact with the piano, but it doesnt stop...

Anything wrong with the script?