[[1d8+1d12]]cs>20 does not provide critical confirmation on rolling 8+12; is there method a of doing so?

Unfortunately, [[1d8+1d12]]cs>20 does not have the desired output (green notation for only rolling both 8 and 12 resulting in a sum of 20). Instead, it simply displays the sum of the two rolls, and moreover, it drops all input after the cs>20 (e.g. "[[4]]cs>2 + 100" returns 4. Is there any way to adjust the critical range for a sum of dice, rather than checking each individually? [[1d8cs>9 + 1d12]] makes it so that you only have to manually check 1/12 of the time, but it's still annoying. Is there a better solution? 

I dont believe there's a way to do what you want without the API or creating a custom roll template, both of which are Pro features. cs>20 only works on individual dice, [[1d8+1d12]] is not recognised as a die, its always treated as a number.

So, the only way to make a roll that does what you want, without pro sub and API and stuff, is with a table, where every possible combination of 1d8+1d12 is represented with the appropriate weight, and the 20 entry returning a cheery "20 Critical Hit" - which itself wont help if you are then going on to involve math on this dice roll.

Another drawback: If you have a lot of dice combinations, tables arent really practical.

Hm, that's rather unfortunate. I'd hoped there might be cheeky way to trick the cs/cf system into treating a number as a dice roll or some other gimmicky solution, but apparently not. I suppose what works best then is to suppress the green/red notation altogether, and simply have it output along with text addendum saying "[[20+(modifiers)]]=crit, [[2+(modifiers)]]=critfail" or something along those lines, and just check at a glance. Ah well. Thanks for the feedback!