sorry, i think i figured it out. putting something like 'sklfjaslf' in includeTableLisa works fine. I was using SubStage and noticing that when i hit the 'Invoke Providers' button, it was generating a 'Tables', 'Views', and 'Stored Procedures' subfolder. but when i went ahead and actually generated the code, it did exclude all tables, and did stored procedures only, which is what i wanted.
hope that makes sense and helps somebody else.
thanks for your help.