Need help with a script (again)

[Akasu]

Now it lights up but doesn't switch off when the box is removed.. Help?

void OnStart ()
{
SetLightVisible("redy", false);

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

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