var user_id = Math.floor(Math.random() * (99999999 - 10000000 + 1)) + 10000000; var user_name = req.body.user_name; var user_soname = req.body.user_soname; // soname =) var user_mail = req.body.user_mail; var user_city = req.body.user_city; var user = new User({ _id: user_id, user_name: user_name, user_soname: user_soname, // soname =) user_mail: user_mail, user_city: user_city });