Multiple filteres

[pich cock]

how can we give multiple filters  using below coding iam already given data filteroperator in 

now how can i give another data.filteroperator for that same form

 Telerik.Reporting.Data.Filter f12 = new Telerik.Reporting.Data.Filter();
            f12.Expression = "=Fields.courseid";
            f12.Operator = Telerik.Reporting.Data.FilterOperator.In;
            f12.Value = "=Parameters.Courses";
            rp2.UI.AvailableValues.Filters.Add(f12);