title: Change sheet name inside formula by changing cell value
body: <p>I have this formula:</p>
  
  <pre><code>=COUNTIF('5-5-2014'!H:H;"NEW")
  </code></pre>
  
  <p>and I have cell K9 have a value of "5-5-2014".
  I want to modify this formula so that I could change sheet name inside formula by changing cell K9 Value. So I want something like this:</p>
  
  <pre><code>=COUNTIF('K9'!H:H;"NEW")
  </code></pre>
  
  <p>I know this formula is totally wrong! Is there any way doing that?!</p>