matching attribute kMDItemDownloadedDate

I don't see a way to match kMDItemDownloadedDate directly in a rule? Not even the "Other..." has this attribute available. Is there a way to add any arbitrary spotlight attribute to Other...?
simply useful mac software
https://www.noodlesoft.com/forums/
kMDItemDownloadedDate >= $time.today(-7)
bobert wrote:Is there a way to add any arbitrary spotlight attribute to Other...?
% mdimport -A | grep -i dvdpedia
'com_bruji_pediaimporter_dvd_director' 'Director' 'DVDpedia movie director' '(null)'
'com_bruji_pediaimporter_dvd_starring' 'Starring' 'DVDpedia movie cast' '(null)'
'com_bruji_pediaimporter_dvd_studio' 'Studio' 'DVDpedia movie studio' '(null)'
'com_bruji_pediaimporter_dvd_theatrical' 'Release' 'DVDpedia movie release date' '(null)'