I have a lot of identical components that needed to be added in to make the assembly. These components would share most of the mating conditions. I tried to use the "copy with mates' but never succeeded. in the "Copy with mates" menu, I highlighted the components that I intended to copy. And I click on the OK button. Nothing happened. I even tried to copy with no mats selected and still couldn't copy the component. I wonder what did I do wrong?