I would like to be able to create a smart group of contacts who: 1) are participants for an event in the future 2) have passport expiration dates (a custom Individual Contact date field) that are before the End Date of said event
I'm not finding any way to compare the two date fields. I've looked at CiviRules, but that doesn't seem to get me what I need.
Any suggestions?
(Joomla 3.7.5, Civi 4.7.21)