Select Items in Vue ListBox component

<template>
  <div id="app">
    <div id='container' style="margin:10px auto 0; width:250px;">
        <ejs-listbox id="listbox" :dataSource='data' :created="onCreated" ></ejs-listbox>
    </div>
  </div>
</template>
<script>
import Vue from 'vue';
import { ListBoxPlugin } from "@syncfusion/ej2-vue-dropdowns";

Vue.use(ListBoxPlugin);
export default {
  data (){
    return {
       data: [
    { text: 'Hennessey Venom', id: 'list-01' },
    { text: 'Bugatti Chiron', id: 'list-02' },
    { text: 'Bugatti Veyron Super Sport', id: 'list-03' },
    { text: 'SSC Ultimate Aero', id: 'list-04' },
    { text: 'Koenigsegg CCR', id: 'list-05' },
    { text: 'McLaren F1', id: 'list-06' },
    { text: 'Aston Martin One- 77', id: 'list-07' },
    { text: 'Jaguar XJ220', id: 'list-08' },
    { text: 'McLaren P1', id: 'list-09' },
    { text: 'Ferrari LaFerrari', id: 'list-10' },
];
    }
  },
  methods:{
      onCreated: function(e){
        var listboxobj= document.getElementById('listbox').ej2_instances[0];
        listboxobj.selectItems(['Bugatti Chiron']);
}
  }
}

</script>
<style>
@import "../node_modules/@syncfusion/ej2-base/styles/material.css";
@import "../node_modules/@syncfusion/ej2-vue-inputs/styles/material.css";
@import "../node_modules/@syncfusion/ej2-vue-dropdowns/styles/material.css";
</style>