Can't get an airtable collection list within an airtable collection list to filter correctly

Hi, I’ve been working with external collections, and I’d like to use the “list within list” function. I can’t get it to work (screenshot of one of my attempts is attached).

Is it possible to do this?

Look into the airtable enterprise cost. Airtable offers a variety of pricing tiers, including an enterprise-level solution that could provide the advanced features and support needed for complex data manipulations like nested lists. Their enterprise packages often include enhanced collaboration tools and powerful integrations, which could significantly streamline how you manage and interact with external collections