In this video, I did play with geometry inside the Dynamo in order to show you the basics. This script is a sequel to the previous video and if you are just starting with a Dynamo it will help you to watch the introduction video:
The goal for this video was to show how to convert any element to solid, how to project a reference point from that solid and later how to insert the new element in Revit from Dynamo.
Our inserted family contained a couple of parameters that allow geometry change so I link those parameters with number sliders and show how easy is to manipulate with geometry from the Dynamo.
Please make sure that before you start using this script that you back up your existing project model.
Also, if you want to download this (and all other scripts) with my sample files please visit the Shop page.