As far I can see everything seems right and no error is being printed on your console.
If you can see in your device that the Last Input is being updated, the data should be in your device. Just create a table widget in a dashboard and you should see the variables and it’s values.
You can also see the last variables that was insert to your device by acessing the link: https://api.tago.io/data?authorization=DEVICE-TOKEN
Just replace the DEVICE-TOKEN by your token at the end of the URL.
If the Last Input is not being updated, please send us a screenshot of the action you’ve created.