It works for me with this code:ParameterFields paramFields = new ParameterFields(); //setdata ParameterField param_date = new ParameterField(); param_date.ParameterFieldName = "date"; ParameterDiscreteValue d = new ParameterDiscreteValue(); d.Value = this.date+" - "+this.datesf; param_date.CurrentValues.Add(d); paramFields.Add(param_date); //set number ParameterField param_no = new ParameterField(); param_no.ParameterFieldName = "number"; ParameterDiscreteValue number = new ParameterDiscreteValue(); if (this.no==0) number .Value = ""; else number.Value = this.no.ToString(); param_no.CurrentValues.Add(number); paramFields.Add(param_no); //and so on repview_total.ParameterFieldInfo = paramFields;