I use Woocommerce plugin. All works great, but I need add to PayPal IPN 'custom' field only 1 word instead "order_id" that writes at 'custom' field now. I trying edit this file: ...
I've setup a post type-Product with custom fields containing price and other attributes. I'm reading Paypal Documentation right now, What i've read till now is "HTML-Buttons" can be pasted from ...