diff --git a/README.md b/README.md
index 165cc54f..e5d17eef 100644
--- a/README.md
+++ b/README.md
@@ -94,7 +94,7 @@ cd zanui-weapp
         var quantity = e.quantity;
 
         this.setData({
-          [`quantity.quantity`]: quantity
+          'quantity.quantity': quantity
         });
       }
     }));