I have multiple discounts in eCart6 and have displayed the discount amount but only the first discount amount displays

I have entered several 10% discount codes that are to be active for only three days. Some of the codes will overlap. I also have a 40% discount code.

Triggers: Total number of items >0;
AND If Session variable CouponCode == A4F29C
Calc: Based on the cart subtotal, Cart subtotal times .10

The codes all work, discounting the cart total appropriately. My problem is that only the discount amount of the first 10% code displays. I am displaying the discount amount using the variable eCart1 [Present Discount Value]

Can you tell me how I can have multiple discount codes and have the [Present Discount Value] show the amount the subtotal is discounted for any active code that is used?
Website product page: http://www.clingingtothecross.com/products.php?cat=1
1st code A4529C
2nd code B4629D
40% code T10140L