Question about Item Type Syntax - Area of Parcel Pad

I was looking at the following recently posted article about Item Type Syntax: https://communities.bentley.com/products/road___site_design/w/road_and_site_design__wiki/51013/video-item-type-syntax-for-nodes-and-conduits

Although the title of the article is specific to Nodes and Conduits, it seems that the start of the list is generic to all civil objects? 

My specific issue is I am trying to find an expression to obtain the area of a Parcel Pad. I tried using 

which is listed as a Civil Quantities property, but that is not giving me any results. 

Any suggestions on how to get this area?

Thanks