Thanks for the quick response!
Every demo I’ve seen uses a database thing as a data source, which I can get to work just fine. It’s when I try to use a simple on-screen text element as the data source that things fall apart.

I think I’m missing something with what sort of data source is fed into the plugin. Your suggestion to use “Source list RG’s content:item #Current cell’s index” has me confused. What cell’s index is being referenced here? Also, when I try to set this up, using either an RG or a custom state as the data source, the drop-down list of dynamic code does not offer “Current cell’s index” as an option after selecting “item #”, no matter how I set up the custom state. It actually makes sense to me that I shouldn’t be able to call data into the plugin by “current cell’s index”, which leaves me to conclude that I have no idea how to set this up.