this doesnt work, can u fix it?

i have an acid tank and my acid doesnt kill people heres the code:

local function EffectsOfAcid()
	local hp = char.Humanoid.Health
		local char = character
			hp = 0
		end
	end
end
touched:connect(EffectsOfAcid)
local touched = sp.Touched
local sp = script.Parent