Automatically Use the EDD Download Title as the Focus Keyword

Hi RankMath support,

Based on this article I tried to automate the Insertion of Focus Keyword for EDD Products.

https://rankmath.com/kb/how-to-automate-the-insertion-of-focus-keyword/

First, I created the rank-math.php at the theme folder.

Then I added this code to it.

<?php
/**
* Function to automatically update the focus keyword with the post tags, if no focus keyword is set
*/
function update_focus_keywords()
{
$posts = get_posts(array(
'posts_per_page' => 100,
'post_type' => 'download' //replace post with the name of your post type
));
foreach ($posts as $p) {
$keywords = [];
if (get_the_tags($p->ID)) {
foreach ((get_the_tags($p->ID)) as $tag) {
$keywords[] = strtolower($tag->name);
}
if (!get_post_meta($p->ID, 'rank_math_focus_keyword', true)) {
update_post_meta($p->ID, 'rank_math_focus_keyword', implode(", ", array_unique($keywords)));
}
}
}
}
add_action('init', 'update_focus_keywords');

?>

But after the download update, the keyword is not updated.

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And one more question:

is there anyway to add KKstar ratings to EDD product schema in rank math?

Can you help me?