diff --git a/server/web3sign/controllers/game_item_mall.js b/server/web3sign/controllers/game_item_mall.js
index d854c2b..211fd98 100644
--- a/server/web3sign/controllers/game_item_mall.js
+++ b/server/web3sign/controllers/game_item_mall.js
@@ -10,6 +10,7 @@ async function buy(session) {
     const account = bcutils.toNormalAddress(session.request('account', ''));
     const netId = session.request('net_id');
     const price = session.request('price');
+    const currencyName = session.request('currency_name');
     const bc = serviceFactory.create('BlockChain');
     {
       const ret = await bc.init(netId);
@@ -25,7 +26,7 @@ async function buy(session) {
       }
     }
 
-    const currency = bc.getContractAddressByName(contract.CEG_INSTANCE_NAME);
+    const currency = bc.getContractAddressByName(currencyName);
     const userAddress = bc.getUserAddress();
     {
       if (!bc.isValidAddress(currency)) {