Hi @jarvis,
Thanks for replying, I managed to solve it using
get_field('tax_amount', $post_id)
and making sure the following was at the top;
`global $post;
$post_id = false;
if (defined(‘DOING_AJAX’) && DOING_AJAX) {
if (isset($_GET[‘post_id’])) {
$post_id = $_GET[‘post_id’];
}
} else {
$post_id = $post->ID;
}`