shipping weight not transfering to paypal

How do I transfer the shipping weight to paypal. When I checkout it asks for zipcode but then calculates a $0 cost for shipping. The weight is not being transferred and configured properly. How do I add the weight to my shortcode?

Right now I am using:

[wp_cart:Body Shampoo:price:59.00:end]

Thanks

https://wordpress.org/plugins/wp-ultra-simple-paypal-shopping-cart/