Spend a PDF for each Coupon code on the gift certificates

Hi have a profile for Gift Vouchers. Work is, if a customer wants to create several gift certificates to the cart, so the amount to 2 or more vouchers 3. Virtuemart. Then should be issued for each coupon code a PDF. How can I set it? Thank you Ilona Kreuzmann

Hello,

You would have to set your image to the size of the page.