Setting Critical Success and Critical Failure on only one die when rolling multiple dice

Hello all,

I am trying to use the critical success/critical failure features in Roll20 for my custom system which uses d6 dice pools.  Critical failure will be 1-3 while critical success will be 4-6, so I understand that when rolling a single d6, it would look like /roll 1d6cf<3cs>4.  However, the number of dice rolled is dependent on character's attributes, skills, and other variables.

Is there a way, when a roll looks more like {{roll= [[[[@{variable1}+@{variable2}+@{variable3}...]]d6>?{Target Number?|4}]]}} to add the cf<3cs>4 text but have it only apply to the last die rolled?  (or the first, or really any single die, doesn't matter).  As it is, with the defaults left intact, the roll result comes up as green if ANY die is critical success, red if ANY die is a critical failure, and blue if at least one die each is a crit success/crit fail.

You'll need to specify the die with the highlights separately, such as:

[[1d6cs>4cf<3>4+[[@{variable1}+@{variable2}+@{variable3}...-1]]d6cs>7cf<0>4]]

This way, only the first die gets any highlights.

Thank you!  Why the second >4 in the section for the first die and at the end?  I see that the cs/cf part at the end is setting a separate, impossible condition so none of the other dice can trigger it, but why specifically cs>7cf<0>4?  What is that piece saying?

And will this work with a query as well?  I have the rolls ask for a target number input as a query with a default of 4. Does it matter what order I put the critical success/failure declarations vs. the target number query?  My full code is:

<button type="roll" name="attack2" value="&{template:rolls} {{title=Attack}} {{subtitle=@{weapon2name} }} {{roll= [[[[@{weapon2type}+@{condition2}+@{mightiness}+@{mightmod}+@{weapon2material}+@{weapon2attack}]]d6>?{Target Number?|4}]]}}">

EDIT:

When I revise it to match what you wrote, it breaks.

Because the dice are rolled separately, they need to check for success separately - then the results of the two checks can be just summed together. That's what the last bit in there is for.

[[1d6cs>4cf<3>?{Target Number?|4}+[[(0@{weapon2type})+(0@{condition2})+(0@{mightiness})+(0@{mightmod})+(0@{weapon2material})+(0@{weapon2attack})-1]]d6cs>7cf<0>?{Target Number?|4}]] [[1/[[{[[(0@{weapon2type})+(0@{condition2})+(0@{mightiness})+(0@{mightmod})+(0@{weapon2material})+(0@{weapon2attack})]],0}kh1]] ]]

This should work, with some failsafes if the attributes don't quite resolve to clean numbers. The second calculation at the end there to invalidate the whole line if you have a dice pool of zero or less (in which case no roll should be made, correct?

Yes, that is working now, although it returns two number: the number of success (with the correct color, thank you!) and then a decimal ration of 1 divided by the total number of dice rolled (e.g., [7] [0.1] displays when I roll 10 dice with 7 successes; [2] [0.25] displays when I roll 4 dice with 2 successes).

Is there a way to hide that second number?

The way to hide the second number is to place it outside the template rows, such as {{roll=[[the first part]]}} [[the second part]], as anything on a line with a template on it that's not in a valid template row is not shown. (Though the second inline roll is not necessary if you're sure the total dice pool is always above zero)

Beautiful, thank you so much!  It's not likely it would ever get to negative, but it's not impossible, so I separated them out and it's working exactly as desired now.  Thanks for all the help!

Last, bonus question: is there a way to output text in the roll based on if that first die is a critical success or critical fail?  Like, if it's a critical fail, it says Fail, if it's a critical success, it says Success, for example?

Actually, double bonus round: is there a way to decrement one of the variables used in the roll if the first die is a critical failure?

To the first, probably, but the good solution to this is not one that I can give (because I can't write character sheets or templates in them).

To the second, do you mean as in reducing the total number of dice rolled? That is a bit more complicated, it can be sort of done with a roll expression, but you would lose the highlights as the single die roll would have to be nested to affect the number of dice rolled in the outer roll. But if you just need to deduct one from the end result on a critical failure, that's easy, just add f<3 to the end of the first roll, like so:

1d6cs>4cf<3>?{Target Number?|4}f<3

But if it's the former, there may be a way that someone who actually knows about writing character sheets can help you with.

I meant more that, on a critical failure, one of the sheet attributes would be reduced by 1.  Basically, if you attack with a weapon that has 3 Condition, and get a critical failure, could the roll itself automatically call the attr_condition and reduce it by 1.  But as I type it out, that sounds not possible with roll templates and probably something way more complicated than I would have the skill to manage anyway...