Есть вот такая хранимая процедура:

CREATE      PROCEDURE [dbo].[spSaveMyProfile] 
(
    @data ntext = null
)
AS

SET NOCOUNT ON

DECLARE @hDoc int

if (@data is not null)
BEGIN

    EXEC sp_xml_preparedocument @hDoc OUTPUT, @data

--UPDATE
    UPDATE Users
    SET
        Name = XmlUsers.Name,
        [Family name] = XmlUsers.[Family name],
        [Logo] = XmlUsers.Logo
    FROM 
        OPENXML(@hDoc, '/NewDataSet/My_x0020_profile')
    WITH (
        ID int,
        Name nvarchar(50),
        [Family name] nvarchar(50),
        [Logo] image
    ) XmlUsers
    WHERE
        Users.ID = XmlUsers.ID

--INSERT
    INSERT INTO Users 
        (ID, 
        Name, 
        [Family name], 
        Logo)
    SELECT 
        XmlUsers.ID,
        XmlUsers.Name,
        XmlUsers.[Family name],
        XmlUsers.[Logo]
    FROM 
        OPENXML(@hDoc, 'NewDataSet/My_x0020_profile')
    WITH (
        ID int,
        Name nvarchar(50),
        [Family name] nvarchar(50),
        [Logo] image
    ) XmlUsers
    WHERE
        XmlUsers.ID NOT IN (SELECT ID FROM Users)


    EXEC sp_xml_removedocument @hDoc

END    --if (@data is not null)
GO

Вышеуказанная хранимая процедура вызывается следующим образом:

Public Sub XmlSaveData(table as DataTable)

        Dim sb As System.Text.StringBuilder
        Dim sw As IO.StringWriter


        Try

            If (table.GetChanges() IsNot Nothing) Then

                For Each col As DataColumn In table.Columns

                    col.ColumnMapping = MappingType.Attribute
                Next    'col As DataColumn In table.Columns
                'NEW AND MODIFIED VALUES
                If (table.GetChanges(DataRowState.Added Or DataRowState.Modified) IsNot Nothing) Then

                    sb = New System.Text.StringBuilder(1000)
                    sw = New IO.StringWriter(sb)

                    table.GetChanges(DataRowState.Added Or _
                        DataRowState.Modified).WriteXml(sw, XmlWriteMode.WriteSchema)
                    Debug.WriteLine(sb.ToString())
                    _cmdXmlSave.Parameters(0).Value = sb.ToString()

                    sw.Close()

                End If  '(table.GetChanges(DataRowState.Added Or DataRowState.Modified) IsNot Nothing)

                OpenDBConnection(True)
                _cmdXmlSave.ExecuteNonQuery()
            End If  '(table.GetChanges() IsNot Nothing) 

        Catch ex As Exception

            ...

        Finally

            CloseDBConnection(True)
        End Try

    End Sub

Поле Logo (тип image) не сохраняется.
ПОЧЕМУ? И как сделать так чтобы сохранялось?