Soul Fragments

Hello, look this fightclass https://wrobot.eu/files/file/1092-demon-hunter-vengeance/

yeah his code look like this: 

<FightClassSpell>
      <FightClassConditions />
      <SpellName>Spirit Bomb</SpellName>
      <Priority>23</Priority>
      <DescriptionSpell>#Vengeance Talent</DescriptionSpell>
    </FightClassSpell>
 

bot keeps spaming it when he doesn't have any soul fragments, what I need is a way to track the soul fragments stack, so he doesn't spam it even if it's just 1 soul fragment cuz that would be a waste of GCD.

so what I am asking is, how to track the buff stack Soul Fragments if the bot can't track it?

ok so this did the half trick 
<FightClassCondition>
          <ContionType>CSharpCode</ContionType>
          <Param xsi:type="FightClassConditionString">
            <Value>ObjectManager.Me.HaveBuff(203981)</Value>
          </Param>
        </FightClassCondition>

how can I make it track the stacks of that buff? I want my bot to only do Spirit Bomb if he got 4 or more Soul fragments out... Buff Stack can't track Soul Fragments buff for some reason.