Ubercart: Maximum Coupon Discount (uc_coupon)

Hello Everyone,

Re:  Ubercart Maximum Coupon Discount

I was brought this problem today and I am wondering if in our collective memory we know anything about this (apparently) missing functionality in Ubercart Coupon (uc_coupon)?

OpenCart offers this functionality as an add-on:

Maximum Coupon Discount is an Opencart extension designed to limit the discount per coupon code. By default, there is no limit on the amount of discount that can be given. So if you want to restrict with some maximum discount for coupons this extension is for you.  This extension allows you to set a maximum discount that can be given.  Example: Let's say the coupon code is Flat 50% Off, and the order total is $100. So by default, the discount would be $50. But if you wanted to restrict the maximum discount to $20. It won't be possible with default Opencart features.  This extension fills that gap.

https://www.cartbinder.com/store/maximum-coupon-discount-limit-discount-per-coupon-code

Ubercart Coupons Administrative GUI

I looked around in the Coupons area of Ubercart at:

Home » Administration » Store » Coupons

or:

/admin/store/coupons/add

But couldn't find anything that limited the monetary discount of a percentage coupon to some ceiling.  

Has anyone seen this functionality implemented for Ubercart "in the wild?"

Thanks in advance,

g.
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