How to display Bitrix in the shopping cart, what else needs to be done to receive a gift?

Question

1C-Bitrix

Good day! We create, for example, a promotion for which we give the buyer a gift, provided that the basket contains goods worth more than 3,500 rubles from the Pants section. The buyer puts pants worth 1,899 rubles into the cart, which is not enough to receive a gift and gifts, respectively, are not displayed. Is it possible to tell the buyer in the shopping cart that he needs to buy more pants for 1101 rubles in order to receive a belt as a gift? Thank you!