Need help with script

[lanlord000]

What is wrong with this script, when i start the map it gives me an error. The names a right and everyting else. Am noobish at scripting

////////////////////////////
// Run when entering map
void OnEnter()

{
AddUseItemCallback("", "roomkey_1", "mansion_1", "UsedKeyOnDoor", true);
}
void UsedKeyOnDoor(string &in asItem, string &in asEntity)
{
SetSwingDoorLocked("mansion_1", false, true);
PlaySoundAtEntity("", "unlock_door", "mansion_1", 0, false);
RemoveItem("roomkey_1");
}

void OnLeave()

{
AddUseItemCallback("", "roomkey_2", "mansion_3", "UsedKeyOnDoor", true);
}
void UsedKeyOnDoor(string &in asItem, string &in asEntity)
{
SetSwingDoorLocked("mansion_3", false, true);
PlaySoundAtEntity("", "unlock_door", "mansion_3", 0, false);
RemoveItem("roomkey_2");
}

void OnLeave()

{