I don't know Lua, I'd like some help with my progress on lifebloom

[luburium]

</Lua><RecastDelay>0</RecastDelay><Target>Custom</Target><CancelChannel>False</CancelChannel><SkipUnknown>True</SkipUnknown></Ability><Ability><Name>Lifebloom</Name><Default>false</Default><SpellID>33763</SpellID><Actions></Actions><Lua>if members[1].HP &amp;lt; 100 
and not HaveBuff(members[1].Unit,33763,0,&amp;quot;PLAYER&amp;quot;) 
then
  PQR_CustomTarget = members[1].Unit
  return true

I have it so that it will put lifebloom on the target if they have 100% hp and it wont cast more if they have the buff, but how do I make it so that it doesn't cast when they have the buff stacked to 3 times?

[luburium]

No one can help me with this simple problem?