diff --git a/wwwroot/index.ui b/wwwroot/index.ui
index a11c6bd..9aa7bad 100644
--- a/wwwroot/index.ui
+++ b/wwwroot/index.ui
@@ -13,6 +13,6 @@
                         "options": {"url": "{{entire_url('/world/api/create_world.dspy')}}"}, "mode": "replace"}],
              "subwidgets": [{"widgettype": "Text", "options": {"label": "新建世界"}}]}
         ]},
-        {"widgettype": "VBox", "id": "app.world_content", "options": {"width": "100%", "flex": "1", "marginTop": "20px"}}
+        {"widgettype": "VBox", "id": "world_content", "options": {"width": "100%", "flex": "1", "marginTop": "20px"}}
     ]
 }