"Just aim your emission into this cup." ...
... She carefully placed the little cup on an upper shelf, and left the room.
Crikey, I needed six attempts over two hours before I finally managed to hit that damn cup on the upper shelf. I was exhausted!
During the subsequent discussion, we determined that I had misinterpreted her instructions. You're apparently supposed to take the little cup down from the shelf and hold it a lot closer.
For some reason, they won't allow me back.