diff --git a/lib/smartapi-connect.js b/lib/smartapi-connect.js
index 7df5cc1..b537011 100644
--- a/lib/smartapi-connect.js
+++ b/lib/smartapi-connect.js
@@ -144,11 +144,13 @@ var SmartApi = function (params) {
      * @method generateSession
      * @param {string} clientcode
      * @param {string} password
+     * @param {string} totp
      */
-    self.generateSession = function (client_code, password) {
+    self.generateSession = function (client_code, password,totp) {
         let params = {
             "clientcode": client_code,
-            "password": password
+            "password": password,
+            "totp": totp
         }
         let token_data = post_request("user_login", params);