Item description on PayPal page

How can I pass some item description information on the PayPal page ? I only see the price and the name of the item.
I am using paypal_r.

I dont think you can add a description beyond the title of the product.

David

Well... that's not really cool then. I was thinking that some description would be nice, just to let people know what they are buying again. Information is never bad.
I should have an advantage over this because i need only one description that will be the same for all my items.
If anyone found out how to transmit some sort of predefined description parameter to the paypal page, please let me know.

Thanks in advance.

Well that would need you to ask PayPal to add it to the API .......

Paypal is like a bank .. not an invoicing system. You show details prior to payment, they click that and the info on the Paypal site is confirmation not detail.