what i want to do is trim the revolved body and keep whats in the piece of pie the trim curve is created in an offset plane and has also been projected on to the faces that make up the body help what am i doing wrong?

Sorry.. encarlisle...i didnt get you? you want to trim a solid with a curve? if yes, then you can do it in NX.

To trim a solid body you need another body(sheet or solid). so create a extrude surface from your curves and then trim the solid.