-my $attachments = $m->comp('/Ticket/Elements/FindAttachments', Ticket => $TicketObj);
-my $attachment_content = $m->comp('/Ticket/Elements/LoadTextAttachments', Ticket => $TicketObj);
-
-$m->comp('/Ticket/Elements/ShowHistory',
- Ticket => $TicketObj,
- Collapsed => $ARGS{'Collapsed'},
+my $attachments = $TicketObj->Attachments;
+my $attachment_content = $TicketObj->TextAttachments;
+my %extra_args;
+$m->callback( CallbackName => 'ExtraShowHistoryArguments', Ticket => $TicketObj, ExtraArgs => \%extra_args );
+</%INIT>
+<& /Elements/ShowHistory,
+ Object => $TicketObj,