ember.js - Ember: set property on resolve promise -

i upgraded ember 1.11.1 1.13.2, , ember-data 1.13.4

since then, i'm not able set property on resolved promise:

var promise = store.filter('user', {filters: {"googleid":content.id}}, function() {         return promise;  }).then(function(response) {       var user = response.get('content.0');        console.log(user); //--> user entity (object { type: makector/class(), id: "38", store: object, [...])        user.set('foo', "bar"); // crash here  }, function(){ [...] }); 

the error message console no help, since i'm in .then()

edit : context : i'm inside initializer called session.js. i'm trying realise google authentication. specific piece of code after retrieving google infos api. i'm trying see if user such google id exists in back-end, , if it's case (promise resolved), want update user up-to-date google informations , save them back-end (hence .set())

using debugger, figured other way access data works:

var promise = store.filter('user', {filters: {"googleid":content.id}}, function() {         return promise;  }).then(function(response) {       var user = arguments[0];        console.log(user); //--> user entity        user.set('foo', "bar"); // ok  }, function(){ [...] }); 

i surprised, arguments seems come nowhere. there maybe cleaner way it.