change product option value in cart

{% if context == 'cart' or context == 'checkout' or context == 'receipt' %}
<script>
    FC.client.on('render.done', function() {
        for (i = 0; i < FC.json.items.length; i++) {
            var item_id = FC.json.items[i].id;
            var base = parseFloat(FC.json.items[i].base_price);
            var each = parseFloat(FC.json.items[i].price_each);
            var quantity = FC.json.items[i].quantity;
            var dollar_discount = parseFloat((base - each) * quantity);
			// In this case, discountapplied is the discount name, change to match your settings
            $(".fc-cart__item__remove [data-fc-item-id='" + item_id + "']").parents(".fc-cart__item__options").find('.fc-cart__item__option__discountapplied .fc-cart__item__option__value').text(jQuery.trim(FC.util.money_format(FC.json.config.currency_format, dollar_discount)));
        }
    });
</script>
{% endif %}