I have a very simple pipeline in Azure Data Factory:

It consists of 2 consecutive Copy data activities:

1. Fetch a JSON file from an API, and store in a Data Lake with a file name containing the current date and time. The sink file name for the first activity is @concat('parking_', formatDateTime(utcnow(), 'yyyy-MM-ddTHH:mm'), '.json')
2. Load the recently fetched JSON file as sink and insert it into a SQL database

How can I save or output the filename so that it can be specified in and used by the last Copy data activity? If I use the same function for specifying the file name, it might fail, as the function specifying the file name might run at a different time.