Типы передаваемых в Excel данных

Привет!
выгружаю данные из DataTable в Excel с помощью ADO.Net (OleDB провайдером)
Числовые поля в Экселе выгружаются как текст...
как исправить???

Private Sub ReportBuilder(ByVal pathExcel As String, ByVal dtReportSource As DataTable)
        Using dataCnn As OleDb.OleDbConnection = New OleDb.OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" & pathExcel & ";Extended Properties='Excel 12.0 Xml;HDR=YES';")
            dataCnn.Open()
            Dim dataDA As New OleDb.OleDbDataAdapter("select * from [Отчёт$]", dataCnn)
            Dim dataCmdB As New OleDb.OleDbCommandBuilder(dataDA) With {.ConflictOption = ConflictOption.OverwriteChanges, .QuotePrefix = "[", .QuoteSuffix = "]"}
            Dim dataCmd As OleDb.OleDbCommand = dataCmdB.GetInsertCommand()
            ''устанавливаем правильные типы
            'For Each cmdParam As OleDb.OleDbParameter In dataCmd.Parameters
            '    Dim targetColumn As DataColumn = dtReportSource.Columns(cmdParam.SourceColumn)
            '    If targetColumn.DataType Is GetType(Decimal) Then
            '        cmdParam.ResetDbType()
            '        cmdParam.OleDbType = OleDb.OleDbType.Decimal
            '    ElseIf targetColumn.DataType Is GetType(Integer) Then
            '        cmdParam.ResetDbType()
            '        cmdParam.OleDbType = OleDb.OleDbType.Integer
            '    End If
            'Next
            For Each drTarget As DataRow In dtReportSource.Rows
                For Each cmdParam As OleDb.OleDbParameter In dataCmd.Parameters
                    cmdParam.Value = drTarget.Item(cmdParam.SourceColumn)
                Next
                Try
                    dataCmd.ExecuteNonQuery()
                Catch ex As Exception
                End Try
            Next
            dataCnn.Close()
        End Using
    End Sub