FATAL ERROR COULD NOT LOAD SCRIPT *CUSTOM STORY*

[Putkimato]

// Run first time starting map

void OnStart()
{
AddUseItemCallback("", "kaasje", "eerstedeur", "UsedKeyOnDoor", true);
}
void UsedKeyOnDoor(string &in asitem, string &in asEntity)
{
SetSwingDoorLocked("eerstedeur", false, true);
PlaySoundAtEntity("", "unlock_door", "eerstedeur", 0, false);
RemoveItem("kaasje");
}
////////////////////////////

// Run when entering map

void OnEnter()
{

}
////////////////////////////

// Run when leaving map

void OnLeave()

{

}

Try this, you forgot these { } at end