Crystal Reports Rounding Formula Issue (CR2008)

Message

   Hello, I'm facing this problem: I have a report with a lot of fields 
with Custom Style for Numbers Rounding (Format Field -> Numbers ->
 Customize -> Rounding). Both values for decimals and rounding are 
set to 1 but there is a formula specified for both:

if {TD.Zone}=0
then 0
else 2

When I export the report to PDF from a custom application there are no decimals and no roundings 
even if TD.Zone = 4. There should be 2 decimals and the rounding should 
be set to 2. 

Let me explain better: I see a number like 120.00 instead of 120.14

It seems like the application is ignoring the formula for the roundings.

Anyone can help me?

Best regards.