Backend workflow not writing to database, even after successful API call from Make.com

Hi everyone,

I’m a new user and have hit a final wall after extensive debugging. My app uses Make.com to call the OpenAI Assistants API, and the final step is for Make.com to send the answer back to a backend workflow in my Bubble app.

The Problem: The AI’s answer is not being saved to my database.

What I Can Confirm:

  1. My Make.com scenario runs with 100% success. I have checked the history, and the final HTTP module (which calls my Bubble backend workflow) successfully sends the correct answer and user_id.
  2. I have deleted all privacy rules on my User and Message data types for testing. There are no restrictions.
  3. The Bubble backend workflow logs are empty; no errors are reported.

My Test: I simplified my backend workflow to have only ONE action: “Make changes to a thing…”.

  • The “Thing to change” is Search for Users:first item (with constraint Unique id = the user_id from the API call).
  • The change is to set a simple text field on the User called last_ai_test_answer to the answer from the API call.

Even with this simple test, the last_ai_test_answer field in my database remains blank after a successful run in Make.com.

It seems the backend workflow is being triggered but is failing silently before it can write to the database. I would be incredibly grateful if someone could take a quick look at my editor to spot what I’m missing.

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