How can I use parameters in Inventor to make different lengths of roller conveyors?

I understand how to use parameters to make different lengths of the conveyor frame but I don't know how to use parameters to continue to add rollers along that length, using the existing roller pitch.

2 Answers

I Think You should watch link video.Wish you done
https://www.youtube.com/watch?v=Nv1DKKNsVO8