I am using Crystal Reports 10 and Visual Studio 2005 (vb.net). I have created a report and need to pass it parameters. Below is the code I am using. On the line ParamField = ParamFields("Department"), I am getting the error System.ArgumentOutOfRangeException: Specified argument was out of the range of valid values.

If I don't try and sent parameters the report load fine. Does anyone know what could cause this?

Dim ParamValue As New ParameterDiscreteValue
Dim ParamFields As CrystalDecisions.Shared.ParameterFields
Dim ParamField As CrystalDecisions.Shared.ParameterField


ParamFields = CrystalReportViewer1.ParameterFieldInfo
ParamField = ParamFields("Department")

ParamValue.Value = hospital.SelectedValue
ParamField.CurrentValues.Add(ParamValue)