Import DDL - import from odbc data source disabled

[Reto]

Hi
I'm a Oracle PL/SQL developer. Today, from my company I received a EA Desktop licence. I try to import some Oracle Object Types via ODBC. In the help system I could read that reverse engneering is just possible with a "professional" licence. I now try to import my object types via DDL Scripts - but the menu options "import from odbc data source" is always disabled.
Can anybody help me?
Thanks