function deletePermissions($company_id, $permission_control_id)
 {
     if ($company_id == '') {
         return FALSE;
     }
     if ($permission_control_id == '') {
         return FALSE;
     }
     $plf = new PermissionListFactory();
     $plf->getByCompanyIDAndPermissionControlId($company_id, $permission_control_id);
     foreach ($plf as $permission_obj) {
         $permission_obj->delete(TRUE);
         $this->removeCache($this->getCacheID());
     }
     return TRUE;
 }