DWP Test Page Question

I've created two pages DWP Test Page and DWP Test Page Display. The Test Page sets a couple for SIO instances as well as a regular property.

The Test Page Display contains a query to display the data on the Test page.

The ask query works as expected if I only specify the internal object property name. If I try to use a regular page property to refine the query, I don't get any results. Is there a special syntax to use to mix regular page properties with SIO properties in an ask query?