Solved the casting problem from wrappers. Could extract from the selected interactive object the Face, Surface, Plane, Direction. It worked well.
One more problem appeared: In order to make an Extrude I need to use the BRepFeat_MakePrism class that is located in a package that is not wrapped. I will continue with wrapping this package and hopefully this will the last step on building the extruded shape. The BRepFeat package is important it contains many useful functions for 3D modeling, it has to be wrapped anyway. This task is estimated to take one day of work.