Working with Perfect shapes

I need to create a conic frustum in 2D. Think of taking a tapered cylinder such as a drinking glass and peeling off the outer layer and laying it flat. You would end up with an image similar to this shape:

I have found that by using the basic shape tool that I can start to recreate this basic shape:

The problem that I am running into is that I can not figure out how to interact with this shape through my macro. I have been digging through the object model and the API and have determined that CorelDraw shows this to be a shape type of cdrPerfectShape, but I can not figure out how to adjust the radius of the inner and outer curves or the angle of the end of the object. I can set the objects height and width but can not find the code for accessing and changing the position of the glyph (the red node in the image above).

If you have any experience in working with Perfect shapes and how to manipulate them I would appreciate it.