I need help fast

[MacKetchup]

void OnStart()
{
AddUseItemCallback("", "nyckel", "mansion_1", "UsedKeyOnDoor", true);
}
void UsedKeyOnDoor(string &in asItem, string &in asEntity)
{
SetSwingDoorLocked("mansion_1", true, false);
PlaySoundAtEntity("","unlock_door.snt", "mansion_1" ,0 ,false);
RemoveItem("nyckel");
GiveSanityBoostSmall();
}

void OnEnter(){
{
}


void OnLeave()
{
}


void OnGameStart(){ }
{
}

Whats wrong with the code , i could need some help i have tried this now for over 3 hours