SMART Checkout Rules

I had two things to do, an easy one was to rename the klarna payment option to make it clearer, and Jason helped me do it in a flash. 1 min and it was done, very efficient, and it's free so very satisfied.
My other request was way trickier : create a rule to increase prices when customers choose klarna as the commission is much higher, but that is not possible. It's ok as I can imagine that would very difficult to implement.