Hi Pilou, so the way you're talking about getting the twist is something that you're specifically doing to curves that you select after the sweep, right?

So you don't really need any script - you can mark the curves that you are going to flip in whatever way you want - assign them a name, draw a little x next to them, put your own point marker on the ones you are flipping, put them on a particular style, whatever you want...

Maybe assigning a name is an easy way, you must have them selected before you flip them, so you can assign a name right then as a way to keep track of them.

- Michael