diff --git a/.env.example b/.env.example
index d32b8df..b787ec8 100644
--- a/.env.example
+++ b/.env.example
@@ -1,2 +1,4 @@
 # you can find this in https://cloud.dify.ai/ 
-API_SECRET=YOUR_API_SECRET
+APP_ID=YOUR_APP_ID # This is your APP ID aka APP NAME will be used for generate user id under this scope
+API_SECRET=YOUR_API_SECRET # This is your API Secret
+
diff --git a/middleware.ts b/middleware.ts
index 7592935..5229c0e 100644
--- a/middleware.ts
+++ b/middleware.ts
@@ -1,6 +1,8 @@
 import { NextResponse } from 'next/server'
 import type { NextRequest } from 'next/server'
 import { v4 } from 'uuid'
+import dotenv from 'dotenv'
+dotenv.config()
 
 export function middleware(request: NextRequest) {
   const response = NextResponse.next()
@@ -10,7 +12,7 @@ export function middleware(request: NextRequest) {
   }
   // Check and set the user cookie if it doesn't exist
   if (!request.cookies.has('user')) {
-    response.cookies.set('user', v4())
+    response.cookies.set('user', `${process.env.APP_ID}_${v4()}`)
   }
   return response
 }