Attached is a pic of my file properties.  The "Description" is the one I am having issues with.

How do I make the Evaluated Value of "Slot Quantity" show up in the description?

I have tried these two:

\$PRP:"PARTNAME""SLOT QUANTITY@DEFAULT@93013.SLDPRT"\$PRP:"ANGLE"

\$PRP:"PARTNAME"\$PRP:"SLOT QUANTITY"\$PRP:"ANGLE"