How to print tendered amount and change on pos format

Hello great people; I need some help here; we need to be able to print the amount tendered and the change from pos; as entered when receiving payments; a look at the pos doctype does not show the tendered amount or the change; pulling in paid_amount gives you the total for the invoice; so if the goods are worth 1200 and the customer tendered 1500; as entered in the popup ‘pay’ window; the amount paid just pulls the invoice total. I believe the pay popup is a kind of dynamically calculated setup that doesn’t persist the tendered amount and change; just calculates one time for the transaction; I woul like someone to assist us with a way to add lines to the pos print format to show the change on the printed invoice. Thanks; any help will be greatly appreciated.