title: Represent "while t < time limit" in a UML Activity diagram
body: <p>I am drawing a diagram that represents the following:</p>
  
  <ul>
  <li>A user clicks a button on the user interface to edit a post</li>
  <li>The post status is set to "locked"</li>
  <li>The user has a time limit to edit the post</li>
  <li>If the time limit is exceeded then the user cannot save his/her edit</li>
  <li>Else if the time limit is not exceeded then the user can save his/her edit</li>
  <li>The post status is set to "unlocked"</li>
  </ul>
  
  <p>The purpose of this example is to establish how to represent "while time limit is not exceeded" in a UML Activity diagram</p>
  
  <p>I have tried to create a UML Activity diagram but it does not seem right.</p>
  
  <p>Could you please suggest how to correctly draw it? Thank you.</p>
  
  <p><a href="https://i.stack.imgur.com/9bpmX.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/9bpmX.png" alt="enter image description here"></a></p>