Click with tool out to weld onto humanoid won't work?

I have a tool with a handle inside, and parts like the helmet for the top to weld. What I want to achieve is when I have the tool out, and clicked. I welds the helmet to my head. The problem is I'm having trouble with the function or mouse click detection, but I got the weld function which is great.

tool = script.Parent
handle = tool:WaitForChild("Handle")

tool.Equipped:Connect(function()
    print("Tool Equipped")
end)

tool.Activated:Connect(function()
    print("Tool Activated")
end)

function Equipped(hit)

    tool = script.Parent
    handle = tool:WaitForChild("Handle")

    tool.Equipped:Connect(function()
        print("Tool Equipped")
    end)

    tool.Activated:Connect(function()
        print("Tool Activated")
    end)

    if tool.Activated then
        local g = script.Parent.Parent.Top:clone()
        g.Parent = hit.Parent
        local C = g:GetChildren()
        for i=1, #C do
            if C[i].className == "Part" or C[i].className == "UnionOperation" or C[i].className == "MeshPart" then
                local W = Instance.new("Weld")
                W.Part0 = g.Middle
                W.Part1 = C[i]
                local CJ = CFrame.new(g.Middle.Position)
                local C0 = g.Middle.CFrame:inverse()*CJ
                local C1 = C[i].CFrame:inverse()*CJ
                W.C0 = C0
                W.C1 = C1
                W.Parent = g.Middle
            end
            local Y = Instance.new("Weld")
            Y.Part0 = hit.Parent.Head
            Y.Part1 = g.Middle
            Y.C0 = CFrame.new(0, 0, 0)
            Y.Parent = Y.Part0
        end

        local h = g:GetChildren()
        for i = 1, # h do
            h[i].Anchored = false
            h[i].CanCollide = false
        end
        hit.Parent.Saude.Protecao.HelmetProtect.Value = 5000
        hit.Parent.Saude.Protecao.HelmetVida.Value = 3000
    end
end
wait()
g.Destroy()