Form Refresh Conditions for Non-Scalar (List) Properties

I am in the process of building out a piece of functionality in Constellation that requires refresh conditions be called when a change is made to a non-scalar property. Essentially, I would like to run a data transform to populate one text property when the content of a list property changes. I have tried to trigger the Form Refresh Conditions using .NameOfListProperty.pxResultCount, but this does not seem to be working. I have also tried to work with the Pages & Classes tab with little success. How do I configure a Form Refresh condition for a Non-Scalar property?

@TessPorter

Refresh conditions work for scalar and Embedded page (single page). As of now, they are not supported for PageList.

You can perform Post Processing Data transform to execute any business logic for PageList as a workaround.