I’m new to Houdini. I’m modeling a fairly cube like geometry and trying to convert it into a digital asset with parameters.

I’ll make it as simple as possible.

I have a grid. All of it’s faces/primitives have numbers. 1 through 12. Now I created a group with primitives 5 & 6 followed by a polyextrude node. This extrusion distance is controlled by a parameter I created. It works fine. couple of nodes later when I try the same extrusion it doesn’t work because the primitive names have changed cos I added a few edge loops.

Is there a way to setup the primitive numbers so that any new edge loop adds to the number of existing primitives and doesn’t insert between primitive numbers?

Example if I have 1 to 25 and then I add an edge loop I like the new faces to have numbers 26 and higher and doesn’t get inserted in the middle.

If you're modifying the underlying topology, you're better off finding another way to generate your groups. Difficult to say without screenshots / scene files.