People have to submit their name, adress, zipcode and city as billing adress to order.
In case the want to have it shipped to another adress, they can additionally submit that data on the same form.
In the reply I want to tell them where the package is going to be sent to.
So the already filled in billingadress should be the default value for the shippingadress.
I've tried value="<? echo $_GET['Adres']; ?>", but it didn't do the trick...

How do I get that to work?