[dmpinder]

I'm struggling to get this to work on version 4.5.1. The file which includes the PHP code to amend is actually include/func/func.shipping.php, and I have done the following:

PHP Code:

$total_weight_shipping_valid = func_weight_shipping_products($cart['products'], true, $all_products_free_shipping, false);
    $smarty->assign('total_weight_shipping_valid', $total_weight_shipping_valid); 


And on the cart.tpl I have included this:

{$total_weight_shipping_valid}

However nothing shows up. Any thoughts?