When i place order then i used below action

add_action( 'woocommerce_checkout_create_order', 'change_shipping_price', 20, 1 );
function change_total_on_checking( $order ) {
   ...
   ...
}

here i need to set shipping price is zero.
i try below but not working on woocommerce_checkout_create_order

add_filter('woocommerce_package_rates', 'test_overwrite_fedex', 100, 1);
function test_overwrite_fedex($rates)
{
        foreach($rates as $rate) {
            $rate->cost = floatval(0.00);
            $rate->taxes= 0.00;
        }
        return $rates;
}

how can i solve on woocommerce_checkout_create_order action?