multiple script problem!!!

[Fireintex]

Hey ive got a similar problem and its really starting to piss me off. ive already done those doors and keys correctly and they work fine, but what do i put after this:

void OnStart()
{
AddUseItemCallback("", "torture_1", "castle_1", "KeyOnDoor1", true);
AddUseItemCallback("", "tomb", "mansion_1", "KeyOnDoor2", true);
}

void KeyOnDoor1(string &in asItem, string &in asEntity)
{
SetSwingDoorLocked("castle_1", false, true);
PlaySoundAtEntity("", "unlock_door.snt", "castle_1", 0.0f, true);
RemoveItem("torture_1");
}

void KeyOnDoor2(string &in asItem, string &in asEntity)
{
SetSwingDoorLocked("mansion_1", false, true);
PlaySoundAtEntity("", "unlock_door.snt", "mansion_1", 0.0f, true);
RemoveItem("tomb");
}

void OnLeave()

{
}

when i want to put something else in like an area script or another script that isnt to do with keys and doors, if anyone can help ill be so happy >