}
);
-my $from_iso = ($from_placed_on->output('iso') || 0);
-my $to_iso = ( $to_placed_on->output('iso') || 0);
+my $from_iso = C4::Dates->new($input->param('from'))->output('iso') if $input->param('from');
+my $to_iso = C4::Dates->new($input->param('to'))->output('iso') if $input->param('iso');
my ( $order_loop, $total_qty, $total_price, $total_qtyreceived ) =
&GetHistory( $title, $author, $name, $from_iso, $to_iso );