Ensure that lines are highlighted when they contain an error

diff --git a/WowLua.lua b/WowLua.lua
index 3daaee2..3cf6901 100644
--- a/WowLua.lua
+++ b/WowLua.lua
@@ -496,6 +496,11 @@ end

 function WowLua.UpdateLineNums(highlightNum)
 	-- highlightNum is the line number indicated by the error message
+	if highlightNum then
+		WowLua.highlightNum = highlightNum
+	else
+		highlightNum = WowLua.highlightNum
+	end

 	-- Since we know this is FAIAP enabled, we need to pass true in order
 	-- to get the raw values
@@ -511,8 +516,10 @@ function WowLua.UpdateLineNums(highlightNum)
 	local count = 1
 	for line in text:gmatch("([^\n]*\n?)") do
 		if #line > 0 then
+			ChatFrame1:AddMessage(count .. " hi: " .. tostring(highlightNum))
 			if count == highlightNum then
-				linetext = linetext .. "|cffff2222" .. count .. "|r\n"
+				ChatFrame1:AddMessage("got highlight")
+				linetext = linetext .. "|cFFFF1111" .. count .. "|r" .. "\n"
 			else
 				linetext = linetext .. count .. "\n"
 			end
diff --git a/WowLua.xml b/WowLua.xml
index d717bc7..7226c35 100644
--- a/WowLua.xml
+++ b/WowLua.xml
@@ -445,7 +445,7 @@
 				self:ClearFocus();
 			  </OnEscapePressed>
 			  <OnTextChanged>
-				self.highlightNum = nil
+				WowLua.highlightNum = nil
 			  </OnTextChanged>
 			  <OnCursorChanged>
 				ScrollingEdit_OnCursorChanged(x,y,w,h)