making attack demage dont work? Please help.! (F.E)

so i want to make fe script that take damage

that script dont work

note: mouse is Mouse's target

RemoteEvent = script.Parent.Attack
RemoteEvent.OnServerEvent:Connect(function(player, mouse, pow)
    if mouse.Parent:FindFirstChild("Humanoid") then
        print(script.Parent.UpperTorso.Position)
        if (mouse.Position - script.Parent.Head.Position).Magnitude > 10 then

            mouse.Parent.Humanoid.Health = mouse.Parent.Humanoid.Health - 10
            print(mouse.Parent.Humanoid.Health)
        end
    end

end)