Sure! ?{Modifier|0} gets you a prompt for a value which is initially 0. You can also build a dropdown: ?{Modifier|-1|0|+1} if you want to limit choices. You can name those choices like this: ?{Modifier|poor,-1|average,0,|good,+1} So that a prompt offers a dropdown of poor,average,good. Additionally, you can repeat the same label to reuse the value in the formula/macro: [[1d20-?{Modifier|poor,-1|average,0,|good,+1}]] with a Mod of ?{Modifier}.