Custom Field in Invoice

Hello @maluus,

– Could you install the WooCommerce Store Toolkit plugin?
– Afterwards, go to the edit-order screen for the order you’re talking about.
– Scroll down, till you see the new “Order Post Meta” section.

– In this list, look for the NIP value (you could use CTRL + F) & take note of it.
– In the code snippet below, replace _custom_field_here with the meta-key you found in the previous step to display the NIP:

add_action( 'wpo_wcpdf_after_billing_address', 'wpo_wcpdf_add_nip', 10, 2 );
function wpo_wcpdf_add_nip ($document_type, $order) {
	// if order is empty, bail!
	if ( empty($order)) {return;};

	echo  'NIP: ' .  $order->get_meta('_custom_field_here')
}