Can I make the the player unable to turn of the lantern?

[ClayPigeon]

Not really.
You can only set a callback which'll turn it back on if it turns off.

Code: (Select All)

void OnStart()
{    
    SetLanternLitCallback("Ununlit");
}

void Ununlit(bool islit)
{    
    if(!islit)    
    {        
        SetLanternActive(true, false);    
    }
}