I'd like to be able to call a die result that has been rolled in a macro. For example, if I cast a fireball, the target takes 6d6 damage. I'd like to be able to also show the 1/2 damage that those who made their saves take. It's based on the result of the original roll, so I don't want to roll a 3d6 to find that value. Is there a way to do this? The page on the wiki about variables didn't seem like it was applicable.