How to get user input value in Controller class in AX 2012 D365

How to get user input value in Controller class in AX 2012 D365
How to get contract value and based on the user value condition run report design

class TestController extends SrsReportRunController
{
public static void main(Args _args)
{
TestController controller = new TestController();
controller.parmReportName(ssrsReportStr(StatementMan, report));
controller.parmArgs(_args);
controller.startOperation();
}

///

///
///

protected void preRunModifyContract()
{
TestStmtContract contract = this.parmReportContract().parmRdpContract() as TestStmtContract;
this.parmReportContract().parmReportName(this.getReportName(contract));
super();
}

private str getReportName(TestStmtContract _contract)
{
str reportNameLocal;

if (_contract.parmNoTrans()) // this is the user input value
{
reportNameLocal = ssrsReportStr(StatementMan, report1);
}
else
{
reportNameLocal = ssrsReportStr(StatementMan, report);
}

return reportNameLocal;
}

}