function get_dll_count() {
    $args = array(
    'post_type'   => 'attachment',
    'posts_per_page' => null,
    'post_status' => null,
    'post_parent' => get_the_ID(),
    'post_mime_type' => array('application/zip','application/pdf')
    );

	$attachments = get_children( $args );

	foreach ($attachments as $attachment) {
	$dll = get_post_meta($attachment->ID, '_edmc-download-count', true);
	}

	if( isset($dll) && $dll > 0 ) {
	 return $dll;
	}
}