Variable Gift Voucher Amount

Is it possible to make a gift voucher with a variable amount that takes the amount from the attributes on the item. An example is here: http://www.kiterepublic.com.au/index.php?page=shop.product_details&flypage=yagendoo_VaMazing_zoom2.tpl&product_id=89&category_id=40&option=com_virtuemart&Itemid=112

You can create a dropdown of gift certificates:
http://demo.awocoupon.com/index.php?page=shop.product_details&flypage=flypage.tpl&product_id=18&category_id=7&option=com_virtuemart&Itemid=1

by using parent child relationship. Create a parent product called gift certificate and as many children products for different amounts as you need. You will need to link all the children products to AwoCoupon.

Perfect, thank you, I hadn't used the attribute system this way before and it is way better. Here is a video showing how to set up the Parent Child system http://www.youtube.com/watch?v=CS3khvm3gQc
One change though, on the parent Item dont select "List Box for Child Items" if you want the layout in your demo.

Thanks