how to add additional fields to zreport which contains standard report code

Hi Experts,

In order to add additional fields to standard report i copied the code into zreport but i am unable to add additonal field into report because the code is looking so complex.

standard report:AQZZ/SAPQUERY/FKF1============

or

sapmenu->accounting->financial accounting->accounts payable->information system->reports for accounts payable accounting->master data->S_ALR_87012087-Addresslist.

Additional feilds to add is :Region,company code,country

Please let me know how toidentify ALV and guide me how to solve this.

Regards,

naresh.