database design - Enterprise Architect Generate DDL for package not working -

i have class diagram in enterprise architect. want have database tables of package. right click on class diagram package , select code engineering --> generate ddl. in "generate package ddl" dialog, select "include child packages". problem in list below, no table added can select , generate.

thanks.

here steps generate ddl uml class diagram in enterprise architect (ea) 9.3:

1. open project in ea
2. open model's class diagram in editor window. use project browser window on right side , click on floders until find model , double-click it.
3. click tools => model transformation (mda) => transform current package. brings model transformation dialog.
4. select classes want mapped ddl schema in left side of dialog (use button if want them all)
5. click , select ddl checkbox in transformations box on right of dialog
6. click transform. generate ddl diagram.
7. double click ddl diagram in project browser , open ddl diagram in editor tab
8. click tools => database engineering => generate package ddl. brings generate package ddl dialog
9. select classes want generate tables selecting object generate (use select button if needed)
10. specify output file(s) in file generation. prefer single file.
11. click generate button

this generated ddl in specified file. have found generated ddl not usable without manual tweeks far fwiw. not seem possible specify or mapping strategies inheritance, relationship mapping etc. example.