Module pool program table Control

Hi

I have created the module pool program with table control option in VA01 screen enhancment under additonal data2 tab.

while creating or changing the data in table control without data also its allowing to select the rows.

But I want to select row only if data is avalible in table cotrol for row wise.if data is not avalible in row & system should not allow to select the row.

How to achive the fuctionality.

This is very arguent delivery.

Regards

DIvakar