Promotion amount

Hi all,

I perform a promotion aplly programmatically with:
$this->container->get(‘sylius.promotion_applicator’)->apply($order, $promotion);
$this->container->get(‘sylius.order_processing.order_processor’)->process($order);

but at end of order process, promotion is in order details but the total price off the order not take promotion amount.
I want to get promotion amount for an’order programmaticaly to adjust order totals. Someone can help me please