Duplicate the last 2 slides in a powerpoint deck, in order.

I have a powerpoint deck with 1+2i total slides. Each i requires 2 slides, in order. My problem is getting the last step of the loop to duplicate the last two slides together (I can get it to duplicate one or both slides out of order!). Is there a way to duplicate the range of slides? Below is what I mean, some term that does both slides together at the same time.

oPPPrsn.Slides(oPPPrsn.slides.count-1 AND oPPPrsn.slides.count).Duplicate

?

Thanks!

ETA lol okay, so And does work, but it still puts the slides in out of order, even if I swap the location of the -1. It also gives me an error that there is a 0 index value.

Try this:
oPPPrsn.Slides.Range(Array(oPPPrsn.slides.count-1, oPPPrsn.slides.count)).Duplicate