Isn't that just a straight d20 (or d20>10), or should some kind of bonus apply to it? If bonuses should apply, this will depend on the sheet you are using. For a straight d20 roll, you could use this: !group-check-config --add { "Death Save" : { "name" : "Death Saving Throw", "formula" : "\ [d20>10\] "} } This will just show 1 or 0 depending on if it's a success or not, you could also remove the >10 to see the result directly without mouse-over.