%product_category%

Hi i added this to my functions.php

/**
 * Filter to add custom variables
 */
add_filter( 'rank_math/vars/replacements', function( $vars ) {
	global $product;
	if ( ! $product ) {
		return $vars;
	}

	// Product Category
	$vars['product_category'] = [
		'name'    => 'Product\'s Category',
		'desc'    => 'Current Product Category',
		'example' => wp_get_post_terms( $_GET['post'], 'product_cat', array( 'fields' => 'names', 'number' => 1 ) )[0],
	];

	return $vars;
});

I added %product_cat% in Meta tag of product and it doesnt work

I want to add at Titles & Metas the variable product category

Product Example title: Buy %title% – %product_category% – %sitename% => ( Buy MEGA Shoes Blue – Men Shoes – Shoesshop.com)
Product Meta example: Buy online %title%. See more products for %product_category% at sale => ( Buy online %title%. See more products for Men Shoes at sale)

How to achieve this?

Please add more variable, Yoast plugin had them and they are really useful

Regards