A 5 minute spin with this script found 4 idocs. So I'm not sure why it's not working for you.
Scratch that. Found six including 3 in the walls of Luna. (not saying what shard)...
Remember one of the main things you need to do with this script is to be sure when you are walking to NOT using the right mouse button.
Click the right mouse button and while holding down the button, press the left button so you auto walk. Mouse function seems to mess up #PROPERTY values.