title: How do I call a number with Twilio Studio flow REST API execution
body: <p>The purpose is simply to call a number (my number) and have a message start playing. 
  I have created a Studio Flow like so:
  <a href="https://i.stack.imgur.com/jeg41.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/jeg41.png" alt="enter image description here"></a></p>
  
  <p>And published that flow. 
  I've also bought a phone number and it is activated for voice &amp; messaging. I can receive a test voice call with code and using TwiML). </p>
  
  <p>In the settings of my phone number I have the following:</p>
  
  <blockquote>
    <p>Accept: Voice Calls</p>
    
    <p>Configure with: .. Studio ..</p>
    
    <p>A call comes in: Studio Flow (and selected the correct flow)</p>
  </blockquote>
  
  <p>I then proceed to use Postman to try and trigger my Flow using a POST request with the following parameters:
  <a href="https://i.stack.imgur.com/LmI70.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/LmI70.png" alt="postman settings"></a></p>
  
  <p>And the following body parameters where the To number is my number which is verified in my trial account, and the from is the number i purchased in twilio:
  <a href="https://i.stack.imgur.com/M1VUl.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/M1VUl.png" alt="postman settings v2"></a></p>
  
  <p>After clicking on Send in postman I receive a 200 OK message, but I am not receiving a call on my phone. What step am I missing? </p>