SOLVED User Roles in Meteor Method

Hello,
I need some help, how can i automatically add user roles (alanning/meteor-roles) when new user is created.
note: i use Accounts.createUser on the server, to not automatically logged in.

//My Method
newUser(data){
      Accounts.createUser(data);
      Roles.addUsersToRoles(this.userId, 'super-admin', Roles.GLOBAL_GROUP)
    },
//Client
Meteor.call('newUser', account, (err)=>{
  if(err){
    Bert.alert({
      title: 'Error',
      message: err.reason,
      type: 'warning',
      style: 'growl-top-right',
      icon: 'fa-warning'
    });
  } else {
    Bert.alert({
      title: 'Success',
      message: "Success",
      type: 'info',
      style: 'growl-top-right',
      icon: 'fa-info'
    });

  }
  });

Thank you in advance

Problem Solved!

//My Method
newUser(data){
      var id;
      id = Accounts.createUser(data);
      Roles.addUsersToRoles(id, 'super-admin', Roles.GLOBAL_GROUP)
    },