如何在水晶报表中传递参数值

我通过搜索谷歌找到了一些方法，但它不适合我。下面是我的代码:

thongkedonhang rpt = new thongkedonhang();
            ParameterFields pfields = new ParameterFields();
             ParameterField pfieldSTAFF = new ParameterField();
           ParameterDiscreteValue disValSTAFF = new ParameterDiscreteValue();
           disValSTAFF.Value = tungay;
           pfieldSTAFF.Name = "d1";
           pfieldSTAFF.CurrentValues.Add(disValSTAFF);
              pfields.Add(pfieldSTAFF);
         crpt_thongkedondh.ParameterFieldInfo = pfields;

thongkedonhang rpt = new thongkedonhang();
thongkedonhang .SetParameterValue("ParameterName", disValSTAFF);