title: Particle System OnTriggerEnter not working (but all other functions does)
body: <p>I have simple script, onTriggerEnter2d when enemy hit player = minus 1 life etc. works perfect.</p>
  
  <p>now I want to add particle system explosion to it and nothing is happening. not sure what I'm doing wrong.</p>
  
  <p>Player have BoxColider2d with trigger ticked.</p>
  
  <p>Thanks for any help.</p>
  
  <p>some code:</p>
  
  <p>ENEMY:</p>
  
  <pre><code> public ParticleSystem explosion;
   private void OnTriggerEnter2D(Collider2D enter)
   {
   if (enter.gameObject.tag.Equals("Player"))
   {
       HartCount.HartValue -= 1;
       gameObject.GetComponent&lt;ParticleSystem&gt;().Play();
       Destroy(this.gameObject);
   }
   }
  </code></pre>
  
  <p>I tried also this:</p>
  
  <pre><code> public GameObject explosion;
   private void OnTriggerEnter2D(Collider2D enter)
   {
   if (enter.gameObject.tag.Equals("Player"))
   {
       HartCount.HartValue -= 1;
       Instantiate (explosion, transform.position, Quaterion.identity);
       Destroy(this.gameObject);
   }
   }
  </code></pre>