CEikScrollableForm trouble

I'm porting a Series 90 application to Series 80 and am experiencing a problem with a scrollable form derived from CEikScrollableForm (which by the way is deprecated). When I open the form none of the fields in the list are highlighted, but in the emulator they can be clicked on with the mouse and in this way edited. On the communicator, however, there is no way to enter anything because of this. When trying to, I get a E32USER-CBase 21 which pretty much means that an index is out of buonds. I think this happens because none of the fields are highlighted, so the application does not know where to enter the text.

Is there a way to define in advance which field should be highlighted when the form is created?

Thank you.