Could someone please explain the correct process for utilizing a certain size steel from SW toolbox. For example, I want to create a part that is made from a standard piece of 40x40x2.6mm square steel tube. So I go to my toolbox, select structural members, right click on square tube, find that 40x40x2.6 is indeed included in the list as a 10 metre length. I then highlight that line, close the box, and just drag the square tube icon over to my graphics area and click ok to place a representation of such tube at the origin. The problem is that I can't seem to do anything at all with it from that point onwards. I can't smart dimension it's length to start with. Am I going about this all wrong?