diff --git a/webapp/controller/BlockChainController.class.php b/webapp/controller/BlockChainController.class.php
index 9a723dec..efeac88f 100644
--- a/webapp/controller/BlockChainController.class.php
+++ b/webapp/controller/BlockChainController.class.php
@@ -286,16 +286,16 @@ class BlockChainController extends BaseAuthedController {
         $num = getReqVal('num', 0);
         $tokenType = getReqVal('token_type', '');
         if (!is_numeric($num)) {
-            $this->_rspErr(1, "num is invalid, {$num}");
+            myself()->_rspErr(1, "num is invalid, {$num}");
             return;
         }
         if ($num <= 0) {
-            $this->_rspErr(1, "num is invalid, {$num}");
+            myself()->_rspErr(1, "num is invalid, {$num}");
             return;
         }
         $currency = '';
+        $price = BlockChainService::formatCurrency($num);
 
-        $price = $this->normalizeWeb3Price($num);
         $itemId = V_ITEM_DIAMOND;
         $itemCount = $num;
 
@@ -317,7 +317,7 @@ class BlockChainController extends BaseAuthedController {
             )),
         ));
 
-        $this->_rspData(
+        myself()->_rspData(
             array(
                 'trans_id' => $rspObj['trans_id'],
                 'params' => $rspObj['params'],