Logitech Script: ToggleLMB when button is clicked

toggle-mouse-button.lua

-- When this button is pressed, holdButton will be toggled on or off
local toggleButton = 6
-- When toggleButton is pressed, this button will be toggled on or off
local holdButton = 1

local isPressing = false

function OnEvent(event, arg, family)
  if event == "MOUSE_BUTTON_RELEASED" and arg == toggleButton and not IsKeyLockOn("scrolllock") then
    if isPressing then
      ReleaseMouseButton(holdButton)
    else
      PressMouseButton(holdButton)
    end

    isPressing = not isPressing
  end 
end