title: how do i subtract two grandtotal fields in Crystal Reports
body: <p>I'm using crystal reports and i have created two sum grandtotal fields. Now i want to do field 1 - field 2 in a X1 formula, but i can't call those fields into the formula. So I tried to use Sum({field1}) - 2 but that doesn't seem to get the grandtotal.</p>
  
  <p>Is it possible to do a grandtotal in a sum like Sum({field1}.GrandTotal) ?</p>