Sort values of structure with arrays

Hi

For a shopping cart I'm using a structure with arrays to store the items in the cart. I tried to use StructSort but did not work...

This is how I store the items in the cart:

<cfscript>
            if (not(isdefined("session.cart"))) {                // Check to make sure that the Shopping cart structure exists.
                session.cart = structnew();

            // The item structure we are going to use to store the items in the cart
            // is going to have four parts...
            //         1.  The item id
            //         2.  The item name
            //         3.  The price per unit
            //         4.  The quantity

            tempvalue = listtoarray('#attributes.id#,#attributes.name#,#attributes.price#,#attributes.quantity#');

            // if the item is not yet in the cart, simply add it to the cart
            if (not(structKeyExists(session.cart, attributes.name))) {
                StructInsert(session.cart,attributes.name,tempvalue);
            }

            // if the item is already in the cart, update the item quantity
            else {
                tempvalue[4]=session.cart[attributes.name][4]+attributes.quantity;
                StructUpdate(session.cart,attributes.name,tempvalue);
            }           
</cfscript>

Any help will be appreciated.

Thank you.

TJ