Lights and Wingflex - Solution?

Hi All,I read that if you find the light.fx file that refers to the lighting on a specific aircraft you could use a modified .fx file and rename that modified .fx file to replace the original one and use that one.I am talking about wingflex strobes for example, if I get the original aircraft.cfg for that planne and replace the strobe.fx for that plane wnd rename the modified one to strobe.fx and overwrite the one in the effects folder the .MDL will use that new one and the modified lights will work with wingflex.I have overland aircraftIs this true, or is there another method???Many thanks in advance......