Stored Procedure, What Am I Missing? HELP!

SQL Server 2000, VB.NET 1.1.

Here's the dummy sp:

CREATE PROCEDURE am_user.spTestCrap ( @maxFloodControl int, @int_memID int) AS
set nocount on
select @maxFloodControl, @int_memID
return 62
GO

Here's some VB.NET code that does not work:

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
      Dim strConn As String = "server=amdb1;UID=am_User;PWD=thepwd;DATABASE=thedb;pooling=true"

      Dim objConn As New SqlClient.SqlConnection(strConn)
      objConn.Open()
      Dim objComm As SqlClient.SqlCommand
      Dim nReturnedValue As Integer
      Dim memID As Integer


      'This is a "root" level message
      objComm = New SqlClient.SqlCommand("am_User.spTestCrap", objConn)
      objComm.CommandType = CommandType.StoredProcedure

      objComm.Parameters.Add("@RETURN_VALUE", SqlDbType.Int)
      objComm.Parameters("@RETURN_VALUE").Direction = ParameterDirection.ReturnValue

      objComm.Parameters.Add("@maxFloodControl", CType(0, Integer))

      objComm.Parameters.Add("@int_memID", memID)

      Try

         objComm.ExecuteNonQuery()

         If Not IsDBNull(objComm.Parameters("@RETURN_VALUE").Value) Then
            nReturnedValue = CType(objComm.Parameters("@RETURN_VALUE").Value, Integer)
         End If
      Catch
         MsgBox(Err.Description)
      End Try

   End Sub

The error I get back in the message box is: "Procedure 'spTextCrap' expects parameter @maxFloodControl", which was not supplied."

Why the BLEEP not? Didn't I supply it? What the BLEEP am I missing?

TIA,