Need help with a script (again)

[Akasu]

I've been trying to get this script to work for 2 hours now with no luck.
It should make a light visible when a box is in the right place and make it invisible when it's not in place.

void OnStart ()
{
AddEntityCollideCallback("box1","area_red","BOX1RED", false, 1);
}

// Is this right? : "box1" is the object that should collide with the "area_red", "BOX1RED" is the script it runs when collided, "false" makes the script re-runnable, and "1" means that the "BOX1RED" runs on collide (-1 runs when they're not colliding)


void BOX1RED(string &in asParent, string &in asChild, int alState)
{if(asChild == "area_red") {
SetLightVisible("redy", true);
// "redy" is a pointlight
}
else SetLightVisible("redy", false);
}

I copied it from one of the main maps' scripts but it won't work. It simply does nothing (doesn't crash though)