Tricky steploop in screen painter (SE51)

Recently, we have a problem in our standard transaction regarding the pop up dialog being shown. The dialog is originally created by SAP called POPUP_TO_DECIDE_LIST. The dialog shows only 25 radio buttons that when displayed, it is exactly as tall as the monitor screen.

One of the business requirements is to enhance the dialog to be able to show at least 200 rows or all the records in the master table of credit cards as this is related to a credit card transactions. We have contacted SAP and they tell us that this was already addressed by OSS note 1108382. Meaning, there is no need for us to do coding anymore as we just only need to apply the OSS note. But, there is a problem as we've