db.test.findAndModify({
    query: { $text: { $search: "dog" } },
    update: { $inc: { count :1} },
    fields: { score: { $meta: "textScore" } }
})
2014-01-20T19:29:36.927-0500 findAndModifyFailed failed: {
  "errmsg": "exception: Unsupported projection option: $meta",
  "code": 13097,
  "ok": 0
} at src/mongo/shell/collection.js:504