Search not working

gistfile1.js

TEST.JS
db.createCollection("test_index")
db.test_index.ensureIndex({"t.n":"text"})

var mydocs = [
{t: [{language: "english", n: "Mother 1"},{language: "spanish", n: "Madre 1"}]},
{t: [{language: "english", n: "Spreme 1"},{language: "spanish", n: "Edificio 1"}]}
]

db.test_index.insert(mydocs)


FROM CONSOLE
mongo localhost/test_index test.js
mongo test_index --eval 'printjson(db.test_index.findOne({$text: {$search: "Edificio"}}))'


RESULT
Borjas-MacBook-Pro:Development borjagvo$ mongo test_index --eval 'printjson(db.test_index.findOne({$text: {$search: "Edificio"}}))'
MongoDB shell version: 2.6.3
connecting to: test_index
null