diff --git a/vite/src/pages/flow_free.jsx b/vite/src/pages/flow_free.jsx
index c88389f..19c30ca 100644
--- a/vite/src/pages/flow_free.jsx
+++ b/vite/src/pages/flow_free.jsx
@@ -548,6 +548,7 @@ export function FreeFlow(){
         let next=cue.nextcue;
         switch(cue.numpad_type){
             case NUMPAD_TYPE.USERID:
+                console.log('set id', padInput);
                 setUserId(()=>padInput);
                 break;
             case NUMPAD_TYPE.CHOICE:
diff --git a/vite/src/util/backend.js b/vite/src/util/backend.js
index 2c8ce2a..6eb0b39 100644
--- a/vite/src/util/backend.js
+++ b/vite/src/util/backend.js
@@ -51,8 +51,8 @@ export async function writeToGoogleSheet(date, session, userId, password){
             body: JSON.stringify({
                 "date":date,
                 "session":session,
-                "userId":userId,
-                "password":password,
+                "userId":userId?.toString(),
+                "password":password?.toString(),
                 "createdTime": new Date().toLocaleString()
             })
         });