Why the hell wont this work?!

[Brute]

////////////////////////////
// Run first time starting map
void OnStart()
{
AddEntityCollideCallback("LeverExit" , "ShelfDestroyer" , "OpentheExit" , true , 1);
}

////////////////////////////
// Run when entering map
void OnEnter()
{

}

////////////////////////////
// Run when leaving map
void OnLeave()
{

}
////////////////////////////
// Actual functions

void OpentheExit(string &in asParent, string &in asChild, int alState)
{
SetEntityActive("SHELF", false);
PlaySoundAtEntity("", "levelexitopen.snt", "LeverExit", 0.5f, false);
}

====================================================
Help, I am freaking out!
The Shelf didn't dissapear!