In order to get the roll functions on the only Double Cross sheet I could find you need to add the associated API code to your game: Double Cross JS Just to note, when requesting help for custom only sheets (ie. Anything that doesn't show up in the sheet selection dropdown), please include a link to where you found the sheet as it is not a trivial process to track down information on them. For example, I don't actually know if I am looking at the same sheet you are.