Repeat subreports in a master report

[meatjasperforge]

Hi everyone.

I have the necessity to fill a master report with a list of subreports.
The subreport schema is the same for every repetition.
The subreport's data is loaded from an XML datasource.
The subreport contains parameters.

The subreport's repetition involves in an horizontal way and each master report's page contains two subreports.

I could fix the subreport twice in the master report, on the left and on the right for example.
This way I'll have two subreport with the same params' name! How can I pass the params' value to the subreports, showing different data value, if the they have params with the same name?

 

 

I've tried to use a FIELD classed to net.sf.jasperreports.engine.JasperReport but it's forbidden.

So....any solution?

 

Thanks