oUF - Layout discussion

[Bruners]

you also need to register an event for the tag like this

oUF.Tags["[customtag]"] = function(unit)
  local m, n = UnitHealthMax(unit), UnitHealth(unit)
  return m == 0 and 0 or n ~= m and string.format("-%s|r", (m - n)) or m == n and m
end

oUF.TagEvents["[customtag]"] = "UNIT_HEALTH UNIT_MAXHEALTH"

and to use it something like this

	local hp = CreateFrame"StatusBar"
	hp:SetHeight(20)
	hp:SetStatusBarTexture(texture)
	hp:SetPoint(top)

	local hpp = hp:CreateFontString(nil, 'OVERLAY', 'GameFontHighlightSmallRight')
	hpp:SetPoint("RIGHT", -2, 0)
	hpp:SetTextColor(1, 1, 1)
	self:Tag(hpp, "[customtag]")
	
	hp.bg = hpbg
	self.Health = hp