title: Ireports - sum null values and values
body: <p>I was wondering how I can sum values in Ireports 
  For example I have some "null" and some values (5,10,200..etc) 
  I want to sum them in a third column .</p>
  
  <p>I have $F(field1) - 5 
  $F(field2) - Null 
  $(field3) - Null 
  So in total , no matter that I have '5' as result from 'Field1' - I always get "Null"  (After running the jasper ) <a href="https://i.stack.imgur.com/2ywR3.png" rel="nofollow noreferrer">Picture1</a>
  <a href="https://i.stack.imgur.com/OgxmZ.png" rel="nofollow noreferrer">Picture2</a> </p>
  
  <p>Please check screenshots </p>
  
  <p>Thank you so much!</p>