AX 2012 SSRS RDP Class

[SRSReportQueryAttribute(querystr(CustTransQuery))]
public class CustTransdemoDP extends SRSReportDataProviderBase
{
CustTransDemoTmp custTransDemoTmp;
CustTable custTable;
CustTrans custTrans;
AmountCur amountCur;
Voucher voucher;
CustGroupId custGroup;
TransDate transDate;

}
=================
[SRSReportDataSetAttribute(tableStr(CustTransDemoTmp))]
private CustTransDemoTmp getCustTransTmp()
{
select custTransDemoTmp;

return custTransDemoTmp;
}
======================
private void inserrtIntoCustTransTmp()
{
custTransDemoTmp.CustGroup = custTable.CustGroup;
custTransDemoTmp.AmountCur = custTrans.AmountCur;
custTransDemoTmp.Voucher = custTrans.Voucher;
custTransDemoTmp.TransDate = custTrans.TransDate;
custTransDemoTmp.insert();
}
=======================
[SysEntryPointAttribute]
public void processReport()
{
QueryRun queryRun;

queryRun = new QueryRun(this.parmQuery());

while (queryRun.next())
{
custTable = queryRun.get(tablenum(CustTable));
custTrans = queryRun.get(tablenum(CustTrans));

amountCur = custTrans.AmountCur;
voucher = custTrans.Voucher;
custGroup = custTable.CustGroup;
transDate = custTrans.TransDate;

this.inserrtIntoCustTransTmp();
}
}