Associating a File Set with an Express Entity?

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I would like to associate a set of images with a specific Express entry. I know that I can associate each individual photo with the entry using a custom attribute, but I'm just curious if there's the ability to add a custom attribute to the Express object that allows me to select a file set when creating a new entity?

 
digitalrainstorm replied on at Permalink Reply
Posted too soon... Gonna go through this and see what I can come up with:https://documentation.concrete5.org/developers/attributes/creating-c...