Cart rules help!

[ajensen27]

Hoping someone can help me real quick. I have a cart rule setup where if someone buys 3 products from the product selection I have under my restrictions, then they will get 50% off the "Cheapest Product" (setup under the actions tab). Now this works great if all the products someone is purchasing fall under just my selection of products or if they are purchasing another items that is not the cheapest, but if someone is purchasing 3 of the products in my selection and then another item that is cheaper than those 3, it's taking the 50% off that item. Does anyone know how I can change the code to only look at the product selection for the cheapest product?