title: Null Reference exception in my property getter
body: <p>Here is my code:</p>
  
  <pre><code>private decimal _WeightedScoreProfitibility;
  
  [PersistentAlias("WeightProfitibility.WeightNumber * ScoreProfitibility.ScoreNumber")]
  public decimal? WeightedScoreProfitibility 
  {
      get
      {
          try
          {
              return decimal.Parse(EvaluateAlias("WeightedScoreProfitibility").ToString());
          }
          catch ( NullReferenceException )
          {
              return 0;
          }
      }
  }
  </code></pre>
  
  <p>I was getting an Object Null Reference on the my getter. I am assuming because the fields I am calculating in the Persistent Alias are 0 values.</p>
  
  <p>I am catching the null reference error and now when i run the app It just hangs and spins. it never loads. How do I handle this null reference exception when the values I am calculating in the persistent alias are 0?</p>