Oracle ADF UIX tutorial wont commit changes

I'm following the tutorial "Developing Applications with Oracle ADF UIX"
http://otn.oracle.com/obe/obe9051jdev/uixTutorial/lesson_UIX.htm
The tutorial works apart from if I create/update or delete a record its not commited to the database.
Where I'm I going wrong?
Thanks for any help.

create/update should be commited to database due to method "Commit" that you drop into commit data action, and delete won't be commited, you should additionaly create "Commit" button on your page or use another way to commit.

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Oracle ADF UIX tutorial wont commit changes

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