Failure of WhilePrintingRecords formula in JRC

Hi,

I have a report which shows total number of records in its group header for its below group! It uses formula for total:

WhilePrintingRecords;

numberVar x

This report works fine when I set its datasource through XML in report designer CRXI Release 2. But when I run it through Java Reporting Component then its total field shows as zero. So is there any problem with jars used in java environment which fails the formula when run through my application?

Thanks,

Ameya