In the Aguamenti Lesson level (year 6, free play), I got all the keys but I can't find the last hat. There's a statue without a head, and I used the deluminator from the lamp where Pro. Flitwik was trapped in. When I got up there to where the Devil Snare is (along with the other lamp and statue's head). I can't get it to take the light and the Lumos spell doesn't work. Can anyone help me, please?