[otrs] Attachment Column in the State View

Hi, I would like to add a new column to the State View, which shows an icon, if the last customer email of the ticket has an attachment. I added "Body" to the Ticket::Frontend::AgentTicketStatusView###DefaultColumns, which shows the last customer email when hovering with the mouse on it. Attachment doesn't work with the same way, an empty column is displayed. Has anybody an idea, how to show an attachment icon in a new column? Regards, Balázs