Material Custom Property in Drawing Notes Not Working

Hi,

I'm linking part custom properties to various notes and tables in a drawing document template. Everything seems to be going okay, except the material property doesn't seem to want to work nicely. I'm setting the material in the usual way: in the part at the top of the Feature Tree, and using a standard SolidWorks material. I can get the material to show if I create a custom property in the part and use "SW-Material@<part number>.SLDPRT", but imagine there's a way to do this more directly.

I tried using \$PRPSHEET:"SW-Material" but with no luck.

Any help would be much appreciated.

SolidworksDrawings And Detailing