Marketing Manager -- How to automatically apply the greatest of multiple discounts

Question

Hi,

Is there any way to set the priority of non-interactive item-level discounts based on which provides the greater discount in that instance, rather than based on a fixed order?

For example, suppose I have a 20%-off item level discount, and a $30-off item level discount. If the customer is eligible for both discounts, I don't want them to receive both, but only to receive the better discount for that particular item. (I.e. on items under $150, apply the $30 discount, and for items over $150, give 20% off.)

Thanks,
Michael