Update: I noticed that the results of a custom action are not available if you do the custom action running as the user enters the screen, only as the result of a button press or something like that.
Is this the intended behavior? It would be SO NICE to be able to use the results when the user enters the screen. I can get around this for now.
@Devops My hack solution: I just updated the count in my user table after a user favors a show.
Problem: When using an external collection and visibility, there is no option to pass query parameters like you can in the custom list. I need to pass username and action for example.