New Twiddle

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  charts: function(){
    	return [{id:1,values:[{id:1,values:[{id:1,isdisable:false}]}],isdisable:false},
              {id:2,values:[{id:1,values:[{id:1,isdisable:false}]}],isdisable:false}]
  }.property(),
  obser:function(){
    return "12";
  }.property("charts.@each.isdisable,charts.@each.values.@each.values.@each.isdisable"),
  actions:{
    change:function(){
      console.log("action")
      	var charts = this.get("charts").findBy("id",1);//.values.findBy("id", 1).values;
      	Ember.set(charts, "isdisable", true);
    }
  }
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{obser}}
<button {{action "change"}}>Change</button>
<br>
<br>

twiddle.json

{
  "version": "0.15.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js",
    "ember": "3.4.3",
    "ember-template-compiler": "3.4.3",
    "ember-testing": "3.4.3"
  },
  "addons": {
    "ember-data": "3.4.2"
  }
}