This sound script is not working at the end, how do I fix this?

Okay so the first two chunks work but the 3rd one? Not a single thing happens. Also, there are no errors being shown from the studio.

wait(1)
function onClick()
	script.Parent.Sound:Play()
	wait(.1)
	if game.workspace.Scripts.Music.BackgroundMusic.TestZone2.Music.Sound.Playing == false then --water off, turn on
		 game.workspace.Scripts.Music.BackgroundMusic.TestZone2.Music.Sound.Playing = true
		game.Workspace.MapContents.Rain_Fall.Rain1.Enabled = true
	game.Workspace.MapContents.Rain_Fall.Rain2.Enabled = true
	game.Workspace.MapContents.Rain_Fall.Rain3.Enabled = true
	game.Workspace.MapContents.Grass.RainDrop1.Enabled = true
	game.Workspace.MapContents.Grass.RainDrop2.Enabled = true
	game.Workspace.MapContents.Grass.RainDrop3.Enabled = true
	game.Workspace.MapContents.GrassColor.Transparency = .8
elseif
		game.Workspace.Scripts.Music.BackgroundMusic.TestZone2.Music.Sound.Playing == true then --water on, turn off, turn snow on
		game.Workspace.Scripts.Music.BackgroundMusic.TestZone4.Music.Sound.Playing = true
		game.Workspace.Scripts.Music.BackgroundMusic.TestZone2.Music.Sound.Volume = 0
	game.Workspace.MapContents.Rain_Fall.Rain1.Enabled = false
	game.Workspace.MapContents.Rain_Fall.Rain2.Enabled = false
	game.Workspace.MapContents.Rain_Fall.Rain3.Enabled = false
	game.Workspace.MapContents.Grass.RainDrop1.Enabled = false
	game.Workspace.MapContents.Grass.RainDrop2.Enabled = false
	game.Workspace.MapContents.Grass.RainDrop3.Enabled = false
	game.Workspace.MapContents.Snow.SnowFall.Enabled = true
	game.Workspace.MapContents.GrassColor.Transparency = 1
elseif
		 game.Workspace.Scripts.Music.BackgroundMusic.TestZone2.Music.Sound.Volume == 0 then --snow on, turn off
			game.Workspace.Scripts.Music.BackgroundMusic.TestZone4.Music.Sound.Playing = false
			game.Workspace.Scripts.Music.BackgroundMusic.TestZone2.Music.Sound.Volume = 1
			game.Workspace.Scripts.Music.BackgroundMusic.TestZone2.Music.Sound.Playing = false
			game.Workspace.MapContents.Snow.SnowFall.Enabled = false
			end
end
script.Parent.ClickDetector.MouseClick:Connect(onClick)