Hi, I'm currently learning and working with EKL in general and creating Insert Steel in specific. I have created a steel block with its dimension limited by red and pink planes using split command. Now I want to create a EKL Rule then save it in a catalog, when I instantiate this catalog, I only have to choose 6 planes then a new steel block will generated with its dimension limited by my selected planes. How can I do that? Thanks in advance!