Which character sheet template are you using for the game? The '5eDefault' template is for the DnD5E Community Contributed sheet, not the ' D&D 5E by Roll20 ' or ' D&D 5E Shaped' sheets . I'm not familiar with the DnD5E Community Contributed sheet and the 5eDefault template, but if that's the one that you are using, then you are missing a required field title, such as {{description=[[1t[CHW]]]}}. If you make a roll from a character sheet, then click into the chat box and press the up arrow, you should see the command that just got sent to chat and it might list the roll template there, which you could then deconstruct. The D&D 5E by Roll20 sheet has a more fleshed out wiki, so on the templates page , you can see a description of the different roll templates and what fields are available for each.