Strange behavior when loading data from a column with "space" in column header

[pchanas]

Loading a 3 column xlsx file,
column 1 : "date" (date)
column 2 : "downloads" (integer)
column 3 : 'daily downloads' (integer)

I chose date for c1 mapping, double (or float in an other test) for c2 et c3.
Data is loaded:

  {
    "_index": "myindex",
    "_type": "doc",
    "_id": "0eg3K2MBlI2vUD8Ex95q",
    "_score": 1,
    "_source": {
      "date": "2015-01-11",
      "downloads": "503",
      "daily downloads": "53"
    }
  },

But when I create the kibana index I get the following fields:

daily downloads | string
daily downloads.keyword | string
daily_downloads | number

Then in the vizualusations, I can only use "daily_downloads" as numerical field but this field is null...
By removing the " " in the column header, everything is fine.

[kyushy]

fixed in 6eb90a5

thanks for the feed back