diff --git a/wwwroot/promote.dspy b/wwwroot/promote.dspy
new file mode 100644
index 0000000..8d21b86
--- /dev/null
+++ b/wwwroot/promote.dspy
@@ -0,0 +1,44 @@
+# Customer promote page - scan QR code to claim discount
+from ahserver.serverenv import ServerEnv
+
+env = ServerEnv()
+code = params_kw.get('code', '')
+
+result = {
+    "widgettype": "Form",
+    "options": {
+        "width": "100%",
+        "height": "100%",
+        "url": "/discount/generate_qr.dspy?code=" + code,
+        "method": "POST",
+        "fields": [
+            {
+                "name": "valid_term",
+                "label": "有效期",
+                "uitype": "str",
+                "tip": "格式：xY, xM, xD, x是1到多位数字，Y（年），M（月），D（日）"
+            },
+            {
+                "name": "expired_date",
+                "label": "促销失效日期",
+                "uitype": "date",
+                "tip": "促销二维码需在此日期前使用"
+            },
+            {
+                "name": "discount",
+                "label": "折扣",
+                "uitype": "float",
+                "tip": "折扣>0, <1, 最终价格=产品价格*折扣"
+            }
+        ]
+    },
+    "binds": [
+        {
+            "wid": "self",
+            "event": "submited",
+            "actiontype": "script",
+            "target": "self",
+            "script": "await bricks.show_resp_message_or_error(event.params)"
+        }
+    ]
+}
diff --git a/wwwroot/promote.ui b/wwwroot/promote.ui
deleted file mode 100644
index 549106b..0000000
--- a/wwwroot/promote.ui
+++ /dev/null
@@ -1,37 +0,0 @@
-{# promote page for customer scan #}
-{
-	"widgettype": "Form",
-	"options": {
-		"width": "100%",
-		"height": "100%",
-		"url": "/discount/generate_qr.dspy",
-		"method": "POST",
-		"fields": [
-			{
-				"name": "valid_term",
-				"label": "有效期",
-				"uitype": "str",
-				"tip":"格式：xY, xM, xD,x是1到多位数字，Y（年），M（月），D（日）"
-			},{
-				"name": "expired_date",
-				"label": "促销失效日期",
-				"uitype": "date",
-				"tip": "促销二维码需在此日期前使用"
-			},{
-				"name": "discount",
-				"label": "折扣",
-				"uitype": "float",
-				"tip": "折扣>0, < 1, 最终价格=产品价格*折扣， 折扣越小，折扣力度越大"
-			}
-		]
-	},
-	"binds":[
-		{
-			"wid": "self",
-			"event": "submited",
-			"actiontype": "script",
-			"target": "self",
-			"script": "await bricks.show_resp_message_or_error(event.params)"
-		}
-	]
-}