How to display the counter of the established discount in the trade offer?

Question

1C-Bitrix

Good day!
Created a 20% discount. In the settings of this discount, trade offers are specified as goods, as well as the start and end dates of the discount.
In the public part of the site, the discount amount is displayed for the trade offer, but the discount counter is not displayed.
If you specify the product itself in the discount settings (that is, not the trade offer, but the main product), then the discount with a counter is displayed and the discount is applied to the entire product, regardless of the trade offer.
It is necessary to apply the discount specifically to a specific trade offer (for example, apply a discount to size L, but you do not need to apply a discount to size M) and display the discount period exactly for trade offer L
On this issue, they contacted the Aspro TP, but they refuse to resolve the issue, because. decision has not been extended.