add product with wp_remote_post

Hi,
I have problem with wp_remote_post … i want to add product from script in php.
=> woocommerce_rest_cannot_create
but when i add this function in fonction.php , it work:

add_filter( ‘woocommerce_rest_check_permissions’, ‘my_woocommerce_rest_check_permissions’, 90, 4 );

function my_woocommerce_rest_check_permissions( $permission, $context, $object_id, $post_type ){
return true;
}