I would like to add a custom field below the order number or possible to modify the title so, I've tried,
add_action( 'woocommerce_admin_order_data_before_order_details', 'edit_woocommerce_order_header', 10, 1 );
add_action( 'woocommerce_admin_order_data_after_order_number', 'edit_woocommerce_order_header', 10, 1 );
but it's doesn't work.
The Only way I can do now is by using jQuery to find the title class like so,
jQuery(document).ready( function($)
{
$("Text to replace"). insertAfter( \'.woocommerce-order-data_heading\' );
});
For the Woocommerce hook I have no idea.
If anybody have a better approach please share or point me for a guid.
Thanks