diff --git a/wwwroot/pricing_test.ui b/wwwroot/pricing_test.ui
index 7da3405..97e9ea0 100644
--- a/wwwroot/pricing_test.ui
+++ b/wwwroot/pricing_test.ui
@@ -7,7 +7,7 @@
 		"width": "100%",
 		"height": "100%",
 		"fields": [
-{% if amount is not None %}
+{% if amount is not none %}
 			{
 				"name": "amount",
 				"label": "价格",