my $print_url = sub { build_std_url('action=print_dunning', 'format=pdf', 'media=screen', 'dunning_id='.$_[0]->{dunning_id}, 'language_id=' . $_[0]->{language_id}) };
my $sort_url = build_std_url('action=show_dunning', grep { $form->{$_} } @filter_field_list);
my $print_url = sub { build_std_url('action=print_dunning', 'format=pdf', 'media=screen', 'dunning_id='.$_[0]->{dunning_id}, 'language_id=' . $_[0]->{language_id}) };
my $sort_url = build_std_url('action=show_dunning', grep { $form->{$_} } @filter_field_list);