newbie: paypal + line items

hi,

using activemerchant + rails the first time. how can i send my line

items + descriptions etc over to paypal so that the user can review

the items?

purchase_options{

:items => [

        {

          :name => "Tickets",

          :quantity => 22,

          :description => "Tickets for 232323",

          :amount => 1211221

        },

        {

          :name => "Other product",

          :quantity => 33,

          :description => "Something else for 44444",

          :amount => 555

        }

    ],

:ip=>…,

…,

…}

setup_purchase( @total ,purchase_options)

but the items wont show

any pointers are really welcome

tia

tom

anyone?