Cloud Google Datastream file_rotation_interval it does not change

Question

i change the rotation interval in cloud storage, I take the change, however it doesn't create the object with the interval set, but every 60s

this is my code:

{
    "file_rotation_mb":20,
    "file_rotation_interval":"480s",
    "avro_file_format": {
        "schemaFileFormat": "AVRO_SCHEMA_FILE",
        "compression": "NO_COMPRESSION"
      }
    }


gcloud datastream streams update prueba-ser --location=central-1 --gcs-destination-config=/home/bi/GCS_DESTINATION_CONFIG.json

result: create object every 60s