Runtime setting up Formula field not working

[koushikdey79]

I have been using CR8 template. In our testing, we have changed some of our existing reports, which were actually printed using a C++ based console program. From the program we use to set one formula as:
if(!p_CRPEJob->SetFormula("CopyNo", chrCopyNo))
{
Error handling
}

This has been working in machine, but in our testing machine this formula setting is not working in the sense that everytime it is printed, the formula field in report "CopyNo" remains the same, i.e 1.00 always.
We are using Sybase 12.5 database and using Sybase System 10 dll to connect to database from the template.
Can anyone please help, what may be the cause?