contactformにfunctionから文字を自動追加する方法

function my_form_tag_filter($tag) {
global $post;
$post_id = $post->ID;
$post = get_post($post_id);
if(!is_array($tag)) return $tag;
if($tag[‘name’] == ‘your-download-name’) {
$tag[‘values’] = (array) $post->post_title;
}
return $tag;
}
add_filter(‘wpcf7_form_tag’, ‘my_form_tag_filter’);