Get report Custom parameter value in controller class.

protected void preRunModifyContract()
    {
        boolean summarized = false;

        summarized = this.parmReportContract().parmRdlContract().getParameter("Summarized").getValueTyped();

        if(summarized)
        {
            this.parmReportContract().parmReportName(ssrsReportStr(RetailSalesRegReport, RetailSalesRegister_Summarized));
        }

    }