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Hello kind Lispers, I am wondering if someone can point me in the right direction. I have a 3D Primitive Shape, many of them actually. Picture a concrete building floor with slopes, and drain trenches. none of the shapes are simple rectangles. I see that the AutoCAD command: list will produce the following. Command: list Select objects: 1 found Select objects: Ks_VolBody Layer: "0" Space: Model space Handle = 1bc Coordinates of Object Entity Coordinate System Origin X= 122.2666 Y= 66.7545 Z= 0.0000 Xaxis X= 1.0000 Y= 0.0000 Z= 0.0000 Yaxis X= 0.0000 Y= 0.0000 Z= 1.0000 VersionIndex = 0 PartOrigin =-1 Area =128102.870250 Volume =2752941.011569 Center of Weight X=276.671661 Y=186.828356 Z=50.368505 (Sorry i know that code wrapper is meant for..well.. code. but it looks better this way) OK the point is. The volume that the list command produces is correct. I want this Volume, and I want to be able to simply prompt the user of my LISP to pick a shape and then store this volume in a variable. The problem I am having is that I can not seem to find where to access this Volume. Any help would be appreciated Cheers! Andy.