API Workflow - Data not updating

Hello dear community! I have created an API workflow similar to the one outlined below: Dynamic row addition in Repeating Group and bulk CRUD of Things using vanilla Bubble

The workflow involves making changes to a specific ‘Flight’ under a data type called ‘Flights’. When text is entered into a popup, I would like the data field ‘passenger 1 name’ to update to show the text that has been entered.

To test my workflow, I created some dynamic textboxes to display data in real time.

When I launch my app, everything seems to be working except for the API entry of passenger 1 name into the database. How could I solve this issue? Why is the entered passenger name not showing up?

I have also checked my data tab, and the entry is not visible there either.