Newb question (new to roll20). Trying to set up an ability/skill check for characters that is based on a target value defined by an attribute plus skill points. CoC 6E uses percentiles for skill checks. For Dodge rolls, the target value is <= ((DEX * 2) + skill points). Assuming 20 skill points, I tried: /roll 1d100<{@{DEX}*2+20} But I get this error: Could not determine result type of: [{"type":"M","expr":1},{"type":"C","text":"d100<{10*2+20}"}] I've tried a couple combinations of {} or [] or () and read the dice reference page several times. I'm probably missing something obvious...