Problem getting a field to appear as 'Object's Property Column' in a grid

I created 2 SQL query generators, which both return 2 columns from my SQL server table

but when I go to add the Object's Property Columns in a grid in a webform, even after choosing the correct data configuration, I can only see one of the two columns.

What am I missing here? What needs to happen for 'ModelName' to appear as an Object's Property Column? Thanks!