I need help with this script

[The chaser]

Hey. So i made this script and i can't get it to work, does anyone know how to fix this? (I'm pretty new to this script thing)

////////////////////////////
// Run first time starting map
void OnStart()
{
GiveItemFromFile("lantern", "lantern.ent");

for(int i=0;i< 10;i++) GiveItemFromFile("tinderbox_"+i, "tinderbox.ent");

// Start of everything!

AddEntityCollideCallback("Player", "introscript", false, 0);
}
void introscript(string &in asParent, string &in asChild, int alState)
{

if(alState == 1)
{
PlayMusic("03_puzzle_secret", false, 1.00, 0, 5, true);
}
if(alState == -1)
{
StopMusic(0, 5);
}
}