[unlimit]

Answered my question regarding hand of light:

function FracHealthWOG()
  local hpa = 2678
  local hol = GetSpellInfo(76672)
  local pta
  if UnitAura(uid, hol) then
	pta = 3;
  else
	pta = UnitPower(uid,9);
  end
  local a = (UnitHealth(uid)+(hpa*pta));
  local b = UnitHealthMax(uid);
  if(b<1) then return 0; end
  a=a/b;
  if a<0 then
    return 0;
  elseif a>1 then
    return 1;
  else
    return a;
  end
end
wog = FracHealthWOG();