Macro Question

I am using a macro to roll Frenzy checks in my vampire game. I have an input in the macro so players can spend Willpower for auto successes. Now I want to use what they input to subtract from their Current Willpower (Attribute: CurrentWillpower). Can I do that?  How would I? !power {{ --whisper|GM --name|@{selected|token_name} tries to resist the Beast !!! --Frenzy|[[ [$Fre] (@{S_I})d10>6f1 + ?{Willpower}]] --?? $Fre.total < 1 ?? !Roll|@{selected|token_name} looses control and frenzies !! --?? $Fre.total > 0 ?? !Roll|@{selected|token_name} maintains control... for now }}

I'm pretty sure you can use AlterBars to do that.

After installing the ChatSetAttr script, you could use a ChatSetAttr command alongside PowerCards, e.g. !power {{ --whisper|GM --name|@{selected|token_name} tries to resist the Beast !!! --Frenzy|[[ [$Fre] (@{S_I})d10>6f1 + ?{Willpower|0}]] --?? $Fre.total < 1 ?? !Roll|@{selected|token_name} looses control and frenzies !! --?? $Fre.total > 0 ?? !Roll|@{selected|token_name} maintains control... for now }} !modbattr --sel --CurrentWillpower|?{Willpower}

I installed Alterbars and got it working. thanks guys