I need help with a tool script for my game any out to help? (damage self on click script)

I'm trying to make a script where in a tool if you click it kills you, can anyone help me add it into this?

SCRIPT:

local Tool = script.Parent

enabled = true




function onActivated()
    if not enabled  then
        return
    end

    enabled = false
    Tool.GripForward = Vector3.new(-.981, .196, 0)
    Tool.GripPos = Vector3.new(-.5, -0.6, -1.5)
    Tool.GripRight = Vector3.new(0, -0, -1)
    Tool.GripUp = Vector3.new(0.196, .981, 0)


    Tool.Handle.EatSound:Play()

    wait(.8)

    local h = Tool.Parent:FindFirstChild("Humanoid")
    if (h ~= nil) then
        if (h.MaxHealth > h.Health + 1.6) then
            h.Health = h.Health - 1.6
        else    
            h.Health = h.MaxHealth
        end
    end

    Tool.GripForward = Vector3.new(-1, 0, 0)
    Tool.GripPos = Vector3.new(-.5, -.1, 0)
    Tool.GripRight = Vector3.new(0, 0, 1)
    Tool.GripUp = Vector3.new(0,1,0)


    enabled = true

end

function onEquipped()
    Tool.Handle.OpenSound:play()
end

script.Parent.Activated:connect(onActivated)
script.Parent.Equipped:connect(onEquipped)