title: How to set custom variable on VueJS using vue analytics component
body: <p>I need to set custom variable with vue analytics:</p>
  <pre><code>_gaq.push([&quot;_setCustomVar&quot;, 1, &quot;MyPage&quot;, &quot;NewVersion&quot;, 1]);
  </code></pre>
  <p>But it allows only to trackEvent:</p>
  <pre><code>this.$ga.event(eventCategory, eventAction, eventLabel, eventValue)
  </code></pre>
  <p>Can anyone help me?</p>