public function actionCreatePaymentPo($id)
 {
     $invoiceItem = new LbInvoiceItem();
     $result = $invoiceItem->addBlankItem($id);
     if ($result) {
         $response = array();
         $response['success'] = YES;
         $response['invoice_item_id'] = $invoiceItem->lb_record_primary_key;
         LBApplication::renderPlain($this, array('content' => CJSON::encode($response)));
     }
 }