Handle(HYDROData_Zone) aNewZone =
Handle(HYDROData_Zone)::DownCast( HYDROData_Iterator::CreateObject( aNewLab, KIND_ZONE ) );
Handle(HYDROData_Zone) aNewZone =
Handle(HYDROData_Zone)::DownCast( HYDROData_Iterator::CreateObject( aNewLab, KIND_ZONE ) );