Ah, your supposed to shoot the switch through the fence.
I tried fireball and the sword and neither worked. The other thing is, you don't 'teach' the player the mechanic in a more obvious scenario first
Hmm... can you tell me what happened when you tried the fireball?
It hit the fence instead of going through
Hey Enjoyable Golem, I made an update to the game and you should be able to shoot through the fences now.