Expects parameter '@customerphoto', which was not supplied

<pre>I have this error during update of the customer table:

Procedure or function 'Update_Customer' expects parameter '@CustomerPhoto', which was not supplied.

Stored procedure code :<pre>

ALTER procedure [dbo].[Update_Customer]
    @CustomerID int output,
    @CustomerName nvarchar (50),
    @CustomerPhoto image,
    @CustomerEmail nvarchar(Max),
    @CustomerPhone1 nvarchar(12),
    @CustomerPhone2 nvarchar(12),
    @CustomerAddress nvarchar(Max),
    @CustomerFax nvarchar(12),
    @CustomerStatus bit,
    @CountryID int,
    @CityID int,
    @Notes nvarchar (Max),
    @ModifiedBy nvarchar (30)
AS
BEGIN
    UPDATE CustomersTbl 
    SET CustomerID = @CustomerID,
        CustomerName = @CustomerName,
        CustomerPhoto = @CustomerPhoto,
        CustomerEmail = @CustomerEmail,
        CustomerPhone1 = @CustomerPhone1,
        CustomerPhone2 = @CustomerPhone2,
        CustomerAddress = @CustomerAddress,
        CustomerFax = @CustomerFax,
        CustomerStatus = @CustomerStatus,
        CountryID = @CountryID,
        CityID = @CityID,
        Notes = @Notes,
        ModifiedDate = GETDATE(),
        ModifiedBy = @ModifiedBy
    WHERE
        CustomerID = @CustomerID
END 

Friend Function Update_Customer(ByVal CustomerID As String, ByVal CustomerName As String, ByVal CustomerEmail As String, ByVal CustomerPhone1 As String, ByVal CustomerPhone2 As String, ByVal CustomerAddress As String, ByVal CustomerFax As String, ByVal CustomerStatus As Boolean, ByVal CountryID As Integer, ByVal CityID As Integer, ByVal Notes As String, ByVal ModifiedBy As String) As String
    Dim retval As String

    Dim cmd As New SqlCommand("Update_Customer")

    cmd.Parameters.AddWithValue("@CustomerID", CustomerID)
    cmd.Parameters.AddWithValue("@CustomerName", CustomerName)
    cmd.Parameters.AddWithValue("@CustomerPhoto", SqlDbType.Image).Value = photo
    cmd.Parameters.AddWithValue("@CustomerEmail", CustomerEmail)
    cmd.Parameters.AddWithValue("@CustomerPhone1", CustomerPhone1)
    cmd.Parameters.AddWithValue("@CustomerPhone2", CustomerPhone2)
    cmd.Parameters.AddWithValue("@CustomerAddress", CustomerAddress)
    cmd.Parameters.AddWithValue("@CustomerFax", CustomerFax)
    cmd.Parameters.AddWithValue("@CustomerStatus", CustomerStatus)
    cmd.Parameters.AddWithValue("@CountryID", CountryID)
    cmd.Parameters.AddWithValue("@CityID", CityID)
    cmd.Parameters.AddWithValue("@Notes", Notes)
    cmd.Parameters.AddWithValue("@ModifiedBy", ModifiedBy)

    retval = dm.executeNonQuery(cmd)

    Return retval
End Function

Public Function Update_Customer_WithOutPic(ByVal CustomerID As String, ByVal CustomerName As String, ByVal CustomerEmail As String, ByVal CustomerPhone1 As String, ByVal CustomerPhone2 As String, ByVal CustomerAddress As String, ByVal CustomerFax As String, ByVal CustomerStatus As Boolean, ByVal CountryID As Integer, ByVal CityID As Integer, ByVal Notes As String, ByVal ModifiedBy As String) As String
    Dim retval As String
    retval = p.Update_Customer_WithOutPic(CustomerID, CustomerName, CustomerEmail, CustomerPhone1, CustomerPhone2, CustomerAddress, CustomerFax, CustomerStatus, CountryID, CityID, Notes, ModifiedBy)
    Return retval
End Function

Dim retval As String = p.Update_Customer(txtCustomerCode.Text, txtCustomerName.Text, txtCustomerEmail.Text, txtCustomerPhone1.Text, txtCustomerPhone2.Text, txtCustomerAddress.Text, txtCustomerFax.Text, CheckBox2.Checked, ComboCustomerCountry.SelectedValue, ComboCustomerCity.SelectedValue, txtCustomernote.Text, FrmMain.LblUserID.Text)

Public Function GetPhoto(ByVal filePath As String) As Byte()
    Dim stream As FileStream = New FileStream(filePath, FileMode.Open, FileAccess.Read)
    Dim reader As BinaryReader = New BinaryReader(stream)
    Dim photo() As Byte = reader.ReadBytes(stream.Length)
    reader.Close()
    stream.Close()
    Return photo
End Function


Public Function byteArrayToImage(ByVal byt As Byte()) As Image
    Dim ms As New System.IO.MemoryStream()
    Dim drwimg As Image = Nothing
    Try
        ms.Write(byt, 0, byt.Length)
        drwimg = New Bitmap(ms)
    Finally
        ms.Close()
    End Try
    Return drwimg
End Function