[Coachwith???]

This is my first time to post here, but I have been reading this forum for a while. I think it is great that it is here and really appreciate everyone's input.

My question is on a point after, if a try (2 pt conversion) is good but the offense gets called for holding, do they back up 10 yards and try again, or is it just no good? I seem to remember both, but that may just be my old mind playing tricks on me.