I'm having a parameter field in my crystal report and i wanna pass a string to it by assigning a variable to it, but i having problem..Below is the code i use to deal with number type parameter :

       Me.CrystalReportViewer1.ParameterFieldInfo.Clear()
        Dim paramfields As ParameterFields = Me.CrystalReportViewer1.ParameterFieldInfo
        Dim abc As New ParameterField
        abc.Name = "cust_ID"
        Dim abc_value As New ParameterDiscreteValue
        abc_value.Value = getid
        abc.CurrentValues.Add(abc_value)
        paramfields.Add(abc)

May i know what should i change in order to make it a string type parameter ?

Urgently looking for help here...Thanks in advance..