title: Flow Block Utilization service block displayed on bar chart
body: <p>I am trying to get the service block created into a flow block to display utilization output in a bar chart.</p>
  <p>I have tried the following code with service block</p>
  <pre><code>  PP_T.utilization()  
  </code></pre>
  <p>It did work with the service block, however, when I have created a flow block contain a service block the code didn't work. Not sure how to solve this issue?</p>
  <p><a href="https://i.stack.imgur.com/9cbCl.png" rel="nofollow noreferrer">Flow Block and Bar chart</a></p>