title: unity particle doen't play second time
body: <p>I have a particle system defined in my game objects. When I call <code>Play</code> it plays (it plays for 5 seconds by design). when I call <code>Play</code> again nothing happens. I tried  to call <code>Stop</code> and <code>Clear</code> before recalling <code>Play</code> but that didn't help.</p>
  
  <p>Can particle systems play more than once?</p>
  
  <p>My code is in this method, which is called when a button is clicked. </p>
  
  <pre><code>public void PlayEffect() 
  { 
      for (int i=0;i&lt;3;i++) 
      { 
          NextItemEffectsP[i].Stop(); 
          NextItemEffectsP[i].Clear(); 
          NextItemEffectsP[i].Play(); 
      } 
  } 
  </code></pre>
  
  <p><code>NextItemEffectsP</code> is an array that contains particles that I populate in the editor</p>