Can't find PersonInImage or RegionPersonDisplayName

[Schlista]

I'm trying to use this tool to search for the people I've tagged in my photos in LR3.  I run the exiftool to copy the RegionPersonDisplayName to the PersonInImage metadata field.  I was hoping to use this tool to search for either one of those meta fields; however, they don't show up after I choose update selected photos.  I have over 500 metadata fields returned, but not either of these two.  Also they both do appear when looking at the file with exiftool (GUI and command window).

Any suggestions?

[areohbee]

In a word - I don't have a clue.

Maybe somebody else does?

I'm not done thinking about it yet, but right now I have no idea.