Enhancement standard table control in transaction

Hi.

In transaction ES30 (IS-U) there is a table control implemented on the screen.

Although the structure/table iteself contains all data, only 15 or so fields are shown as these have been put on the screen via screen-painter by SAP itself. So just 'hard-coded' and not done dynamically.

I would like to show more fields in that standard table control. Is this posiible - and how - or do I have to create a new table control in the subscreen (more or less a copy of the standard table control and extend it with the required fields)?

Hope someone out there has the answer

Thanks!

Henry