Retrieving quantities in cart from Web API?

Hi,
I am trying to use the web API's GetCart method to retrieve the contents of the user's cart, but I can't seem to figure out how to determine the quantity of each item that was selected.

I am currently testing this with packages. Whether one package is selected or more than one package, the result I get back from the Web API seems to be the same.

I should note that we are using TNew for our online ticketing system and this is a custom integration that I'm working on -- I redirect users to a custom page during the checkout process, and it's from there that I want to determine the contents of their cart.

Does anyone know how to determine quantities in the cart?

Thank you,
Matt