I have created a PayPal form for a product I sell where I require sever

I have created a PayPal form for a product I sell where I require several pieces of info from the customer to create their product. However, my customers often want to buy more than one. I would rather they not have to go into PayPal to pay for each one seperately.

I am posting the form on a Yola site. Is there some way to submit the forms and put the products in a cart until the customer has finished their order?

This is a re-post of a comment on PayPal Forms