[SOLVED] How to get my user id (Roles)

Hi guys I am working to implement the roles of users I have 3 roles the administrator, free user and user premiun for the part of the role of administrator to get me to function perfectly the roles but when I want to perform the part of the user premiun and free user and I Step user _id it takes me as undefenied basically I have it as for administrator roles only that id does not take it.
When I click on my button I get this error Error invoking Method ‘toggleGetPremiun’: Match failed [400]
Testing by passing the id manually as a string by means of the meteortoys: allthings using ctrl + M I took your id and placed it like this and it works me Meteor.call (‘toggleGetPremiun’, ‘ygkjdkgglkldfgkldflfg’);

In the code I have this.

// server publish.js
Meteor.publish('user', function() {
  return Meteor.users.find({});
// cliente getPremiun.js

Template.getPremiun.onCreated(function () {
  var self = this;
    console.log(this._id);  //I get undefined

  "click #buttonGetPremiun": function(){
      console.log(this._id);  //I get undefined
      Meteor.call('toggleGetPremiun', this._id);
// methods.js
  toggleGetPremiun(id) {
    check(id, String);
    if (Roles.userIsInRole(id, 'Premiun')) {
      Roles.removeUsersFromRoles(id, 'Premiun')
      console.log("roles remove");
    } else {
      Roles.addUsersToRoles(id, 'Premiun')
      console.log("roles add");

I had to point to {{#each UserRegister}} Inside my button to get _id

{{#each UserRegister}}
        <button id="buttonGetPremiun" class="btn-main">User Premiun</button>