Use item in other levels

[Cranky Old Man]

void OnStart*1()*2
{
AddUseItemCallback("", "glass_container_mix_done", "gryde1", "UseItemOnArea", true);
}

void UseItemOnArea(string &in asItem, string &in asEntity)
{
SetEntityActive("Fiskeolie_static_1", true);
SetSwingDoorLocked("mansion_5", true, true);
StartPlayerLookAt("mansion_8", 10, 10, "");
AddTimer("", 0.3*3, "LookAtDoor_1");
RemoveItem("glass_container_mix_done*4");
}

Still it doesnt work...

*1 = Remove space.
*2 = Remove the semi-colon here!
*3 = Add f when dealing with floating numbers.
*4 = Remove space.