title: Crystal Reports is not showing negative numbers
body: <p>I have a report that has been working perfectly up until now. There is a "Tax" field, which uses the following formula to calculate:</p>
  
  <blockquote>Sum ({JBIS.PrevTax}, {JBIS.BillNumber}) + Sum ({JBIS.TaxAmount}, {JBIS.BillNumber})</blockquote>
  
  <p>The formula works except for when the conclusion is a negative number. We need it to print even the negatives here. Currently, it displays "0.00" if the answer is negative.</p>