if ( !$self->{preview} && $ext_for_format eq 'pdf' && $::instance_conf->get_doc_storage) {
$self->{attachment_filename} ||= $self->generate_attachment_filename;
if ( !$self->{preview} && $ext_for_format eq 'pdf' && $::instance_conf->get_doc_storage) {
$self->{attachment_filename} ||= $self->generate_attachment_filename;