Getting the Credits to Roll

[Thief977]

Alright, almost got the whole thing done.
The last bit is getting this bucket of tar to unlock a level door. The sound I selected plays, but the door remains locked.

void UsedKeyOnDoor4(string &in asItem, string &in asEntit)
{
SetSwingDoorLocked("level_wood_2", false, true);
PlaySoundAtEntity("", "ui_use_oil", "level_wood_2", 0, false);
RemoveItem("bucket_of_tar");
}

Any ideas? I read somewhere that level doors unlock differently.