Sync Records Smart Service - Loop because outputs dont work

Hello, I'm creating a process model to synchronize a database with a record type.
In the process, I created a node that uses the "Sync Records" smart service.
According to the documentation, synchronizing more than 1,000 records requires a loop.
I've followed the steps, but the "Sync Records" smart service doesn't return anything in
the "ac!RecordsUpdated" variable, which should be used to avoid an infinite loop.
Here are some screenshots of the configuration and docs link.

docs.appian.com/.../Sync_Records_Smart_Service.html

The import to the database is successful, but the record type is not synchronized.