How to get user token from User object

I am using Ionic2 with backendless REST API.

After successfull login, i receive an user object.

Object {lastLogin: 1463742055662, created: 1456890510000, name: "personal", ___class: "Users", user-token: "7652C01C-7343-F9AE-FF15-DD7E0427A800"…}
<ol>___class:"Users"
__meta:"{"relationRemovalIds":{},"selectedProperties":["__updated__meta","password","created","name","___class","ownerId","updated","objectId","email"],"relatedObjects":{}}"
created:1456890510000
email:"personal@gmail.com"
lastLogin:1463742055662
name:"personal"
objectId:"C8FE36A2-9396-13C5-FF9C-8F8EF7F07900"
ownerId:null
updated:null
user-token:"7652C01C-7343-F9AE-FF15-DD7E0427A800"
__proto__:Object
</ol>

my user_service.js


userLogin(userData) 
    {
        let body = JSON.stringify({ login: userData.email, password: userData.password });
        let headers = new Headers(this.Backend_Header);
        let options = new RequestOptions({ headers: headers });
        return this.http.post(this.Backend_Login_Url, body, options)
            .map((res) => {
                let data = res.json();
               console.log('data.email at user_service', data.email);  // result : personal@gmail.com
               console.log('data.objectId at user_service', data.objectId); // result C8FE36A2-9396-13C5-FF9C-8F8EF7F07900
               console.log('data.user-token at user_service', data.user-token); // result Reference error : Token is not defined
               this.storage.set('userStorage', JSON.stringify(data)); // result : success
               return data;
              });
     }

From my service.js, you can see that i can get the user objectId or email or name.
But i can not get the user token.
Thks in advance for ur kindly help.

Hello Huang,
Did you try to debug?
Please also look an this answer for Android SDK, it may be helpful for you. http://stackoverflow.com/a/35407496/2856227

Regards, Artur

Hi @Artur Dzidzoiev,
Thks for ur suggestion but i’m using REST api not Javascript api.

By the way, i already found the answer.
using like this

console.log('data.user-token at user_service', data['user-token']);

Hope this can help anyone with the same problem.
Thks.