display popup with internal table in additional data b tab of SO line item(VA02) Screen

Hi Experts,

i have to display a push button in additional data b tab of SO line item(VA02) Screen 8459. When this button is pressed it has to display a popup box and display some internal table with 8 fields. i have tried POPUP_WITH_TABLE, POPUP_TABLE_DISPLAY. It is displaying fields in a continuous text.

Also i am getting error for FCODE assigned to push button. I am clearing sy-ucomm and fcode. But on subsequent pressing it is displayin error message T185. Is it mandatory to use VFBS to maintain T185/T185F tables ?

Regards,

Aditya