Elastic search range dates

I have created an Elastic search index from a Mongo database. The documents in Mongo have the following structure:

{
    "_id" : ObjectId("525facace4b0c1f5e78753ea"),
    "time" : ISODate("2013-10-17T09:23:56.131Z"),
    "type" : "A",
    "url" : "www.google.com",
    "name" : "peter",
}

The index was created (apparently) without any problems. Now, I am trying to use Elastic Search to retrieve the documents in the index between two dates. I have read that I have to use range queries, but I have tried many times things like

MatchQueryBuilder queryBuilder = QueryBuilders.matchQuery("name", "peter").type(Type.PHRASE).minimumShouldMatch("99%");
LocalDateTime toLocal = new LocalDateTime(2013,12,18, 0, 0);
Date to = toLocal.toDate();
LocalDateTime fromLocal = new LocalDateTime(2013,12,17, 0, 0);
Date from = fromLocal.toDate();
RangeQueryBuilder queryDate = QueryBuilders.rangeQuery("time").to(to).from(from);
FilterBuilder filterDate = FilterBuilders.queryFilter(queryDate);       

srb = esH.client.prepareSearch("my_index");
srb.setQuery(queryBuilder);
srb.setFilter(filterDate);
sr = srb.execute().actionGet();

and I get 0 hits although there should be many results. I have tried to enter strings instead of dates, but same results.

When I perform a basic query without filters such as:

MatchQueryBuilder queryBuilder = QueryBuilders.matchQuery("name", "peter").type(Type.PHRASE).minimumShouldMatch("99%");

SearchRequestBuilder srb = esH.client.prepareSearch("my_index");
rb.setQuery(queryBuilder);
SearchResponse sr = srb.execute().actionGet();

I get hits with that look like this:

{
"_index" : "my_index",
"_type" : "type",
"_id" : "5280d3c2e4b05e95aa703e34",
"_score" : 1.375688, "_source" : {"type":["A"],"time":["Mon Nov 11 13:55:30 CET 2013"],"name":["peter"]}
}

Where the field time does not have the format ISODate("2013-10-17T09:23:56.131Z")anymore.

To sum up, what would be the Java code (and types) for querying between two dates (and times), taking into account the format?