I'm trying to search in an announcement list. I want the search to return only items, that aren't expired (ows_Expires >= [today]). I found, that ows_Expires is mapped to a managed property called "ExpirationTime". But I don't get, how I can query this in a KQL search string ... I tried using fixed values or today keyword, always returning 0 results:
ExpirationTime>=today ExpirationTime>=[today] ExpirationTime>=2013-01-01 ExpirationTime>=01.01.2013
Is there a way to query for this field?