Extended Views in the SQL Expert mode in 2019

Hi all, I just got a machine up to 2019 and I wanted to experiment with the new views in the Report SQL Expert mode.  Does anyone have more info on this or a quick video explaining how these work?  I see when I add (double click) one of the extended view variables it adds a vew_tablename_variablename but the query then always reports an error when testing.  What's the formatting I should be invoking here?

SolidworksElectrical