Script ERROR need help N00B

[X4anco]

Here is my script can you see any errors because the game thinks there is:

void OnStart ()
{
AddUseItemCallback ("", "Corridor Key", "door_1", "UsedkeyOnDoor", true);
}
void UsedKeyOnDoor (string &in asItem, string &in asEntity)
{
SetSwingDoorLocked("door_1", false, true);
playSoundAtEntity("", "unlock_door", "door_1", 0, false,);
RemoveItem("Corridor key");
}

I have done all the extra_english stuff :d