diff --git a/json/discount_detail_list.json b/json/discount_detail_list.json
index 973e338..0c7ffaf 100644
--- a/json/discount_detail_list.json
+++ b/json/discount_detail_list.json
@@ -28,8 +28,8 @@
         "wid": "prodtypeid",
         "event": "changed",
         "actiontype": "script",
-        "widget": "productid",
-        "script": "await this.loadData({prodtypeid: params.prodtypeid});"
+        "target": "productid",
+        "script": "await this.loadData({prodtypeid: event});"
       }
     ]
   }