I am working on a Web Application in Asp.net 2.0. I want to pass parameter in crystal report by programming.

I write following code on button click but i am getting an Error:
"The types of the parameter field and parameter field current values are not compatible."

Currently i am passing one numeric parameter that has following detail:
Database Field Name = 'Emp_ID' and datatype is 'int'
Report Parameter name = 'EmpID' and data Type is numeric


CODE:
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Dim reportPath As String = "C:\Documents and Settings\Administrator\My Documents\Visual Studio 2005\WebSites\NBX_Reporting\Testing.rpt"


Dim customerNumber As Integer = CInt(TextBox3.Text.Trim())

Dim report As New ReportDocument()
report.Load(reportPath)

Dim parameterFieldDefinitions = report.DataDefinition.ParameterFields
Dim customerNumberParameter = parameterFieldDefinitions("EmpID")

Dim parameterValues = customerNumberParameter.CurrentValues

Dim discreteCustomerNumber = New ParameterDiscreteValue()


parameterValues.Add(discreteCustomerNumber)

customerNumberParameter.ApplyCurrentValues(parameterValues)

CrystalReportViewer1.SelectionFormula = "{NBX_Data.Orig_Ext} = {?EmpID}"
CrystalReportViewer1.ReportSource = report

CrystalReportViewer1.DataBind()