title: Excel 2010 logic conditions vs. '#VALUE!'
body: <p>I would like to do logic against the return value of '#VALUE!' in Excel. </p>
  
  <p><strong>Setup:</strong> Let's say <code>A1 = "Fu"</code> and <code>A2 = "Bar"</code>.  <code>A3 = A1 - A2</code> will give me the <code>#VALUE!</code> Value Error.</p>
  
  <p>I would like to do logic such as <code>IF( (A1 - A2) != "#VALUE!", Do This, Else Do This)</code>.  If that expression is not allowed, then I can settle for <code>IF( A3 != "#VALUE!", Do This, Else Do This)</code>.</p>
  
  <p>My question:  Is this even possible?  Can you write logic against an Excel Value Error response?</p>
  
  <p>Thanks in advance for any tips/tricks.</p>