PDF Invoice

I am using the booser plugin for my woocommerce webshop. I use the PDF invoices and packing slips.

I have customized the invoice so it fit me – but only one little thing is missing. I have the lines with subtotal, vat, shipping and total. I have added the Discount line if there is any discount on the order.

I use Woocommerce Gift cards – and I would like to have this line on the invoice as well. So if you have paid a part of the order with gift card – there should be a line with this value.

Is this possible?

thank you in advance