I think he just misunderstood (probably even on purpose, because let's face it, you would have to be retarded to misunderstand that). The point is not to increase the lapcount of the leader but to get the leader's lapcount and add 1 to that. And set that as the race length
Personally I'm honestly just super busy plus I'm not a very good programmer so I haven't had the time to do it myself. It's an easy thing to do for an experienced person. Unfortunately it seems no one is willing to make it