You probably shouldn't use the macros in your class but if you insist on using them, place
INCLUDE <CNTN01>.
In the macro definition part of your class: Goto -> Local Definitions/Implementations -> Macros.
Instead of using the old macros that were never intended to be used together with ABAP Objects, you could learn how to use workflow in ABAP OO by reading Jocelyn Dart's excellent blogs.