Nested not_analyzed 'raw' field : case insensitive

Hello,

I have below mapping for an index,
I would like to make below 'raw' field search case insensitive and tried
with https://gist.github.com/kimchy/1403902. It did not work for me.
I was using ES 1.3.x.

Anyone could help?

Thanks,

Jennifer

{"mappings":{"data":{"properties":
{"user":{"type":"nested","properties":
{"full_name":{"type":"string",
"fields":{"raw":{"type":"string","index":"not_analyzed","fielddata":{"format":"doc_values"}
}}}}}}}}}

tried myself again. With 1.4.2 it worked for me.