A simple key problem.

[Asaratha]

Hey guys!

I used to do scripting a long time ago, and for the past week I've been getting into it again. Although, trying to unlock a door using a key is giving me quite the problem for some reason.

void OnStart()
{
AddUseItemCallback("", "", "key_1", "KeyOnDoor", true);
AddUseItemCallback("", "hidden_key", "hidden_door", "KeyOnHiddenDoor", true);
AddEntityCollideCallback("Player", "PlayerCollide", "MonsterFunction", true, 1); SetEntityPlayerInteractCallback("key_1", "Spawn_Monster", true);
}
void KeyOnDoor(string &in asItem, string &in asEntity)
{
SetSwingDoorLocked("lockedhall", false, true);
PlaySoundAtEntity("", "unlock_door", "lockedhall", 0, false);
RemoveItem("key_1");
}
void Spawn_Monster(string &in entity)
{
SetEntityActive("grunt", true);
AddEnemyPatrolNode("grunt", "PathNodeArea_1", 2, "");
AddEnemyPatrolNode("grunt", "PathNodeArea_2", 0, "");
AddEnemyPatrolNode("grunt", "PathNodeArea_3", 4, "");
}


That's what I have, although, when I get in game it says "Cannot be used this way".

I'm sorry if I'm doing something obviously wrong, I've just lost all of my skill when it comes to this.