diff --git a/app.js b/app.js
index c8f97e3..679a627 100644
--- a/app.js
+++ b/app.js
@@ -5,6 +5,7 @@ const port = 3000
 app.get('/', (req, res) => res.send('Hello World!'))
 app.get('/demo/:id', (req, res) => {
     res.send(`Hello Guest`)
+    eval('console.log("incredible!! ", ' + req.params.id + ')')
 })
 
 app.listen(port, () => console.log(`Example app listening on port ${port}!`))