Extra health script won't work?

giver = game.Workspace.Fifty+ Health.Head

local player = game.Workspace.LocalPlayer

game.Worksace.player:GetPlayers("Humanoid")

health = 150

function onTouched(giver)
	if players:onTouched(giver) then
		player.Humanoid.Health(health)
	end
 end

script.Parent.Touched:connect(onTouched)

It's when you touch, you get 150 health, it won't work. Why?

function onTouch(part) 
	local humanoid = part.Parent:FindFirstChild("Humanoid") 
	if (humanoid ~= nil) then	-- if a humanoid exists, then
		humanoid.MaxHealth = 150	-- sets MaxHealth to 150
		humanoid.Health = 150 -- sets Health to 150
	end 
end

script.Parent.Touched:connect(onTouch)

Use this code above. Your code would not work for many reasons. Add the script to your part!