How do I make ambient reverb change for a certain player when a block is touched?

I'm trying to make it so when you touch a brick the reverb will change for a certain person, but nothing happens at all.

function onTouch(part)
	 game.SoundService.AmbientReverb = "Forest"
	end

Thanks if you can help, I'm kind of a noob so please go easy on me!

Might not be what you're looking for but I was able to get this to work from a normal Script

function onTouched(hit)
	if hit.Parent:FindFirstChild("Humanoid") then
		game.SoundService.AmbientReverb = Enum.ReverbType.Forest
	end
end

script.Parent.Touched:Connect(onTouched)