Problem adding column to WC Subscription [closed]

Alright, so since WC Subscriptions is creating it’s own array for columns. Any filter priority lesser than their function will simply make your code non-functional. So what I did is I changed priority from 10 to 1000 so that my codes fire after their code.

add_filter( 'manage_shop_subscription_posts_columns', function ($columns) {
    $columns['my_field'] = __('My Field');

    return $columns;
}, 1000);