[Plugin: Mini Loops] How to filter by post author

Hi,
Anyone know how to output posts from a particular author using the Mini Loops plugin? I’ve tried using user_id as a filter, but can’t get it to work. I want to use it in the author template to list recent posts from that author.

Thanks!
Thad

PS – Mini Loops is the Swiss-Army knife of plugins. Thank you Kailey Lampert for this awesome plugin.