File: /include/staff/tickets.inc.php
Find: $qwhere.=" AND ( ticket.email LIKE '%$queryterm%'".
" OR ticket.name LIKE '%$queryterm%'".
" OR ticket.subject LIKE '%$queryterm%'".
' ) ';
}
and change it to $qwhere.=" AND ( ticket.email LIKE '%$queryterm%'".
" OR ticket.name LIKE '%$queryterm%'".
" OR ticket.subject LIKE '%$queryterm%'".
" OR ticket.VAR LIKE '%$queryterm%'".
' ) ';
}
Change VAR to your variable.