CATIA CAA - How to get CATSurface from a sweep operation

[22555]

Hi

I have CATIGeometricalElement from Sweep surface which created newly

CATISpecObject_var spSweep1Guide;
Param1.Append(spGuideCurve);
Param1.Append(spCircle);
spSweep1Guide = CAAGsiObjTool.CreateSweepOneGuide(Param1);
Param1.RemoveAll();

CATIGeometricalElement_var spGeomElemSweep = spSweep1Guide;

Will below code work?
CATSurface * mySurface = spGeomElemSweep ;


Can i create a CATSurface from entire sweep surface? Or CATSurface is only for each face of sweep?

my final objective is to create ISOParametricCurve from CATSurface.

CATCurve* pCATCurveV1 = mySurface->ExtractIsoParametricCurve(isoParV1,p1, piGeomFactory);


Thank in advance for your help

Regards
22555