[xwiki-users] Query module count() function returning -1?

Hi, I'm trying to write a page to return some LiveTable results. I'm finding that $query.count() is returning -1 instead of the actual number of results. Can anyone tell me why? {{velocity}} #set($query = $services.query.xwql("from doc.object(Invitation.InvitationMailClass) as inv")) #set($invitations = $query.execute()) #foreach($invite in $invitations) * $invite #end Number of results is: $query.count() {{/velocity}} ...gives results: Invitation.InvitationMessages Invitation.InvitationMessages Number of results is: -1 I was expecting the number of results to be "2". I'm trying to make sense of the documentation here: http://extensions.xwiki.org/xwiki/bin/view/Extension/Query+Module ...but it doesn't seem to have much description of the API, and I can't see anything on maven.xwiki.org either. Thanks, Matthew Exon