--- a/gchart.lua	Wed Jun 24 20:41:37 2009 +0100
+++ b/gchart.lua	Tue Dec 01 13:53:46 2009 +0000
@@ -204,7 +204,7 @@
 		table.insert(result, "chxt="..urlencode(table.concat(axes, ",")));
 	end
 	if next(ranges) then
-		table.insert(result, "chxr="..urlencode(table.concat(ranges, ",")));
+		table.insert(result, "chxr="..urlencode(table.concat(ranges, "|")));
 	end
 	if next(labels) then
 		table.insert(result, "chxl="..urlencode(table.concat(labels, "|")));