I create a box(Box01) with the material of DirectX Shder, and then I copy 2 objects (Box02,Box03) from Box01 with Clone Opations of "Instance". The Box01,Box02,Box03 are the same model. I want to know the relation of "Clone Instance" of them. I wish I can export the 3 objects to a XFile that only conains a Box(Box01) and my customized file describes the SRT (scaling,rotation,translation) of Box02 and Box03. By the method, I want to save the size of xfile and export the same model using one xfile. Could somebody know how to find the relation of "Clone Instance" in plugin programming?