ClickDetector Decal Changer, coding failure, why?

Hello all! I placed this code inside the part which is being clicked in order to change a decal someplace else! It's not showing failure, why won't the decal change and the others be removed?

local tigers = script.Parent.Parent.Tigers
function click()
script.Parent.Parent.RBHL.Transparency = 1
wait (0.1)
script.Parent.Parent.Huskies.Transparency = 1
wait(0.1)
script.Parent.Parent.Sharks.Transparency = 1
wait (0.1)
script.Parent.Parent.Mustangs.Transparency = 1
wait (0.1)
script.Parent.Parent.Tigers.Transparency = 0
end
script.Parent.ClickDetector.MouseClick:Connect(click)

1. Looks like all of the decals will be merged or something.
2. Let's remember that if you click once (Assuming all decals are visible), all decals would disappear except the tiger decal. But once you click again, nothing changes. This is due to the fact you didn't change the transparency of the other decals, they stayed invisible the whole time and you forgot to change the decal's transparency.