The original is fine; you're just missing a question mark on the last query piece. /r 1d6>4 + {@{target|T} - @{selected|S} + ? {weapon strength?|0} Scott's suggestion is also valid, but the two methods will have different effects depending on what you're going for. If you want to roll a d6 and count a 4,5,or 6 as "1" success, add that "1" or "0" to the target's "T" attribute and then subtract your own "S" attribute from it, and then subtract a prompted "Weapon Strenght" value, your original does that. Scott's variation will add targets "T" attribute, subtract your own "S" attribute (or a static "2" if it's higher than the stat), and then add the "Weapon Strenght" prompt. That result will determine which dice are counted as successes in the 1d6 roll. (ie: If that ultimate result is a '3', the 1d6 will count 3 or higher as a success.