[otrs] Agent Tickets Serach Result Close time

Hi, I have this question: I would like to perform a custom research in my otrs when I log in as an agent. In the AgentTicketSearchResultShort page I'd rather see these fields: Ticket Create Time Close Time From State Ticket Agent Customer ID Than: Tcket Age(!!!) From State Ticket Agent Customer ID Editing the AgentTicketSearchResultShort.dtl file (in Program Files\OTRS\OTRS\Kernel\Output\HTML\Standard) I replaced "Age" field with "Created" and a I obtained the Create Time in my search view. I don't Know hot to find the close time. Anyone can help me? Thanks, Alessandro