OTClient [OTclient] Help to create highlight target effect mod?!

[ausirosiris]

addCheckBox("highlightTarget", "Highlight Current Target", true, rightPanel, "Additionaly hightlight current target with red glow")
if true then
  local function forceMarked(creature)
    if target() == creature then
        creature:setMarked("red")
        return schedule(333, function() forceMarked(creature) end)
    end
  end

  onAttackingCreatureChange(function(newCreature, oldCreature)
    if not settings.highlightTarget then return end
      if oldCreature then
          oldCreature:setMarked('')
      end
      if newCreature then
          forceMarked(newCreature)
      end
  end)
end

I found this feature inside the game_bot module. But it needs to be used while botting (i don't want it). Is there a way to code this into a separated MOD
that triggers that highlight effect on targets all the time without the need to be used inside the otc's bot?