Well, I look for the way to reverse the plane. The answer was in the context of the help API says, but it is unclear in the text, at least for me.
So, in a plane wich IRefPlaneFeatureData::Type2 returns swRefPlaneConstraintBase I can't use a property ReverseDirection, then to reverse the plane the API help says that a property ReverseDirection can be used in a Constraint-based with angle or offset distance references, to do this I have to use
IRefPlaneFeatureData.set_Constraint(int Index, int Retval) --> MyPlaneRef.set_Constraint(0, 264);
Index = swRefPlaneReferenceIndex_e.swRefPlaneReference_First (0) --> First plane that I used
Retval = swRefPlaneReferenceConstraints_e.swRefPlaneReferenceConstraint_OptionFlip(256) + swRefPlaneReferenceConstraints_e.swRefPlaneReferenceConstraint_Distance (8)