Macro help! Need a return a zero if the result is a negative number

In the following script, the attribute "Shield" can be a large number, such as 40. If the 3d12 is rolled, and the result is low, then subtracting the Shield from the roll will net a negative result. I want it to display 0 (or the negative number). Currently, it simply ignores the Shield Attribute - unless the result will be positive. &{template:default}{{name=Disrupter Cannon Blast at @{selected|Token_Name}}}!}}} {{attack= [[1d20]]}} {{damage= [[3d12 - @{selected|Shield}]]}} Any ideas? THANK YOU!

Try this @{selected|Token_Name}}}!}}} {{attack= [[1d20]]}} {{damage= [[ {0,( 3d12 - @{selected|Shield}) }kh1 ]] }}

I got a syntax error: SyntaxError: Expected "(", ".", "[", "abs(", "ceil(", "d", "floor(", "round(", "t", "{", [ |\t], [+|\-], [+|\-|*|\/|%] or [0-9] but "s" found.

Try this tweak: @{selected|Token_Name}}}!}}} {{attack= [[1d20]]}} {{damage= [[  {0d0,( 3d12 - @{selected|Shield}) }kh1  ]] }}

Thanks! Still get: SyntaxError: Expected "(", ".", "[", "abs(", "ceil(", "d", "floor(", "round(", "t", "{", [ |\t], [+|\-], [+|\-|*|\/|%] or [0-9] but "s" found.

Well, the syntax is correct. I'd check the value in your shield attribute to make sure it is actually a number instead of something like "shield:40". I checked the syntax with this test roll: /r {0d0,3d12 - 20}kh1

This works:  @{selected|Token_Name}}}!}}} {{attack= [[1d20]]}} {{damage= [[ 3d12 - 20]] }} (A negative result from 3d12-20 displays as a negative number) Now I just need to pull the Shield Attribute of the selected token, in place of the "20"

Thanks this works ("0" result on negative numbers): @{selected|Token_Name}}}!}}} {{attack= [[1d20]]}} {{damage= [[ {0d0,3d12 - 20}kh1]] }} Just need to grab the Shield attribute of the in place of 20.

Guess I will have to use a query. Not as elegant, but OK: &{template:default}{{name=Disrupter Cannon Blast at @{selected|Token_Name}}}!}}} {{attack= [[1d20]]}} {{damage= [[ {0d0,3d12 - ?{Shields?}}kh1]] }}

Thanks everyone. If anyone thinks of a solution, I will keep looking. Again, thanks for your efforts.

Like I said in my post, it sounds to me like you've got erroneous or incorrectly formatted information in your shield attribute. Try just typing @{selected|shield} into chat and see what gets output. There is no difference from a macro standpoint in doing {0d0,3d12 - 20}kh1 vs {0d0,3d12 - @{selected|shield}}kh1 . The only way that doing the attribute call could be causing an issue is if its value is not what you think it is. Additionally, I just noticed that you've got something hinky in your macro: &{template:default}{{name=Disrupter Cannon Blast at @{selected|Token_Name}}} !}}} {{attack= [[1d20]]}} {{damage= [[ {0d0,3d12 - ?{Shields?}}kh1]] }} That !}}} serves no purpose unless you've got a custom API script that is looking for that for some reason, although I would highly recommend using a different command syntax if that is the case since ending curly brackets like that can mess up a wide variety of macro functions.