Let's say I had a character who attempted to use magic. I had the variable "MAGXP" which dictated which spells he could use. But, I wanted the option to use the magic that wasn't at their level yet to be present, so I could deduct health if they clicked that choice, but if they had the appropriate variable amount, they could use it. So the link essentially could go two different ways.
Is it possible? If so, how?