Its a component that generated a xml like a sitemap but with short-description, category name, sku, image path, & product url.
the php file inside the component that generates the output xml has this variable:
$product_link= "<![CDATA[" .URL."index.php?option=com_virtuemart&category_id=".$category_id."&flypage=vmj_genx.tpl&lang=el&manufacturer_id=".$manufacturer_id."&page=shop.product_details&product_id=".$product_id."&Itemid=53"."]]>";
What i want is when that file is generated to list SEF url and not non-SEF. So it should somehow convert url before exporting.