# How realtime database work´s? **URL:** \ **Category:** Questions about Thunkable X\ **Created:** [July 24, 2019, 7:52am UTC](https://community.thunkable.com/t/how-realtime-database-work-s/154244 "2019-07-24T07:52:14Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![Yukold](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/yukold/32/35122_2.png) [@Yukold](https://community.thunkable.com/u/Yukold)\ **Post date:** [July 24, 2019, 7:52am UTC](https://community.thunkable.com/t/how-realtime-database-work-s/154244/1 "2019-07-24T07:52:14Z")
Hi guys, I will need a lot of patience from you, because I still do not understand how this works To try understand i create a new project and put this blocks: ![image](https://us1.discourse-cdn.com/flex015/uploads/thunkable/original/3X/9/2/9229f9e136eeb7a821b183f0f1bc13b663220d20.png) and after this i run… ![image](https://us1.discourse-cdn.com/flex015/uploads/thunkable/original/3X/1/8/181410316872095b6ae2b252219aa9849958c3c5.png) why it appears undefined? I have sure i put the correctly API KEY and Database URL When i click to save, should something happen in the firebase database? because i not see anything happen Thanks for a lot of patience. ---
**Author:** ![actech](https://avatars.discourse-cdn.com/v4/letter/a/3d9bf3/32.png) [@actech](https://community.thunkable.com/u/actech)\ **Post date:** [July 24, 2019, 8:39am UTC](https://community.thunkable.com/t/how-realtime-database-work-s/154244/2 "2019-07-24T08:39:28Z")
Hi, 1. Make for each parameter a separate display in the Label. 2. Check the value of the “error” block ---
**Author:** ![Yukold](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/yukold/32/35122_2.png) [@Yukold](https://community.thunkable.com/u/Yukold)\ **Post date:** [July 24, 2019, 9:07am UTC](https://community.thunkable.com/t/how-realtime-database-work-s/154244/3 "2019-07-24T09:07:44Z")
I separated to understand better… Now the block´s are: ![image](https://us1.discourse-cdn.com/flex015/uploads/thunkable/original/3X/c/4/c42b2e349443ff967990cac78f0d57f6d0e7200d.png) And in app real test… ![image](https://us1.discourse-cdn.com/flex015/uploads/thunkable/original/3X/1/0/103ffbaa781088f8d9aada0952342b89e95a4700.jpeg) undefined continues appears… How i check the value of the error? And i click save need appears something in database from firebase site? because nothing appears ![image](https://us1.discourse-cdn.com/flex015/uploads/thunkable/original/3X/7/d/7dd0da91ba0dc3715da523deba8044f992dcd4ba.png) ---
**Author:** ![kartik\_old](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/kartik_old/32/28305_2.png) [@kartik\_old](https://community.thunkable.com/u/kartik_old)\ **Post date:** [July 24, 2019, 11:13am UTC](https://community.thunkable.com/t/how-realtime-database-work-s/154244/4 "2019-07-24T11:13:47Z")
It seems like u are using **Cloud Firestore** … U need to use # Realtime Database. Thanks! 😄 ---
**Author:** ![Yukold](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/yukold/32/35122_2.png) [@Yukold](https://community.thunkable.com/u/Yukold)\ **Post date:** [July 24, 2019, 12:54pm UTC](https://community.thunkable.com/t/how-realtime-database-work-s/154244/5 "2019-07-24T12:54:37Z")
Updating… ![image](https://us1.discourse-cdn.com/flex015/uploads/thunkable/original/3X/f/8/f80baf9d59cf9044dc876e3b62dae408a9f0aba3.png) i click save and do nothing too… 😰 ---
**Author:** ![Yukold](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/yukold/32/35122_2.png) [@Yukold](https://community.thunkable.com/u/Yukold)\ **Post date:** [July 24, 2019, 12:57pm UTC](https://community.thunkable.com/t/how-realtime-database-work-s/154244/6 "2019-07-24T12:57:12Z")
I change the rules to true true and finally something happens… =) ---
**Author:** ![kartik\_old](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/kartik_old/32/28305_2.png) [@kartik\_old](https://community.thunkable.com/u/kartik_old)\ **Post date:** [July 24, 2019, 2:23pm UTC](https://community.thunkable.com/t/how-realtime-database-work-s/154244/7 "2019-07-24T14:23:18Z")
Mark my **Realtime Database** post as solution! 😉 It’ll close the topic, and clear it. Thanks! 😉 ---
**Author:** ![ioannis](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/ioannis/32/146956_2.png) [@ioannis](https://community.thunkable.com/u/ioannis)\ **Post date:** [November 8, 2024, 12:12pm UTC](https://community.thunkable.com/t/how-realtime-database-work-s/154244/8 "2024-11-08T12:12:09Z")