title: Google Analytics API query Active user
body: <p>I want to query the number of Daily active user from Google analytics API, by the Event label.</p>
  
  <p>In details:
  I have 2 event Categories, each contain 2 Event label. like this:
  (Category)    -> (Action)  -> (Label)</p>
  
  <blockquote>
  <pre><code>1. ui_category_A -&gt; ui_action -&gt; Click_button_A
  2. ui_category_A -&gt; ui_action -&gt; Click_button_B
  3. ui_category_B -&gt; ui_action -&gt; Click_button_A
  4. ui_category_B -&gt; ui_action -&gt; Click_button_B
  </code></pre>
  </blockquote>
  
  <p>I want to query the Google analytics with API, to extract the number of daily active user, who have tracked the event with (1.) only.</p>
  
  <p>How to do the query with parameters? 
  Thanks!</p>