Normally the expression that I use in the community version to be able to connect my xml in a subdataset to be able to bring information to a table is this (((net.sf.jasperreports.engine.data.JRXmlDataSource)$P{REPORT_DATA_SOURCE}).subDataSource("//FACTUACON")) but now that I have moved to the professional version it does not work for me, does anyone know what could be happening?