function HealthPercentage()
	-- health value to display. whole numbers only.
	local TargetPercentHealth = math.ceil((UnitHealth("target") / UnitHealthMax("target") * 100));


	-- recolor text at 35% (future idea: class detection)
	if TargetPercentHealth < 35 then
		PortraitHealth_Health:SetTextColor(1,0,0);
	else
		PortraitHealth_Health:SetTextColor(1,1,0);
	end

	-- change the portrait to show current health
	if UnitIsDead("target") then
		PortraitHealth_Health:SetText('Dead');
	else
		PortraitHealth_Health:SetText(TargetPercentHealth .. '%');
	end
end