Shadowrun 1-3 d8 dice

Okay, so: there's a version of the shadowrun rules which utilizes pools of d8s numbered 0-7 (exploding on 7s per the usual "!!"). As far as I can tell there's no way to do this without the api (even if you roll pools of 1d8-1s, the exploding die would be a normal d8). How could I do something like this, being completely code illiterate? 

If you do this /roll ?{Number|1}d8!p -1 you get the same effect as as the shadowrun roll up. The -1 converts the first die to a 0 to 7 range, and the !p subtract -1 on all exploding dice. Penetrating Dice (!p) are described here:&nbsp; <a href="https://wiki.roll20.net/Dice_Reference#Penetrating_Dice_.28B.2CF.29_.21pCP" rel="nofollow">https://wiki.roll20.net/Dice_Reference#Penetrating_Dice_.28B.2CF.29_.21pCP</a>

Huh, that's a lot easier than I thought. Thanks!&nbsp; Should have read the wiki more closely I suppose&nbsp;

Probably want - ?{Number} so with 3d8 the range is 0–21, rather than 2–23

Oh yes, well spotted.