Vtiger 5.4.0 Comments show to group's members

ModCommentsCore.php

 /* -ComGroup- */
                        $rec=intval($_REQUEST['record']);
                        if($rec>0){
                            $owner=$this->db->query("select smownerid from vtiger_crmentity where crmid=$rec");
                            $owner=$this->db->query_result($owner, 0, 0);
                            $sec_query .= " (vtiger_crmentity.smownerid IN (
                               select vtiger_user2role.userid from vtiger_user2role where vtiger_user2role.roleid IN
                                (select vtiger_group2role.roleid
                                from vtiger_group2role
                                where
                                    vtiger_group2role.groupid=$owner
                                    AND
                                    vtiger_group2role.groupid IN (
                                        select vtiger_group2role.groupid
                                        from vtiger_group2role
                                        where vtiger_group2role.roleid IN (
                                            select vtiger_user2role.roleid
                                            from vtiger_user2role
                                            where vtiger_user2role.userid=".$current_user->id."
                                        )
                                       )
                                )
                            )) OR ";
                        }
                        /* ! -ComGroup- */