I wouldn’t run this loop / update on a GET all endpoint, it will take an age, and is not needed every time. You should do this as a batch, not on a public endpoint, and on the create or edit endpoints if necessary.
Michael from Xano has a video about updating relationships like this.
Check the request history on your endpoint.
Check the inputs that are being passed from Adalo on the request.
There is no error message, you are just returning 0 results. So I suspect the params not being passed.
In Xano I didn’t find anything strange, I have posted this in the Xano community, but I haven’t gotten an answer yet.
I’m confused about what to do, I’ve looked for a discussion on ADALO about this, it turns out like others have experienced this problem, and they mostly delete and recreate and their problem is solved, I’ve tried following them, but it doesn’t work
Your second issue… I have had problems with preceding underscores.
Also are you returning a list in that add on? It will need to be a single item for Adalo to interpret.
If you want a list add on. You can’t. You just have to have another endpoint then pass the ID of the parent record from Adalo to Xano to filter.