ASP.Net Error: Value of type Byte() cannot be converted to Byte

I am grtting the following error:

SeverityCodeDescriptionProjectFileLineSuppression StateErrorBC30311 Value of type 'Byte()' cannot be converted to 'Byte'.

This is my code:

    Private Sub InsertMedicalResults()
        Dim filename As String = Path.GetFileName(FileUpload1.PostedFile.FileName)
        Dim contentType As String = FileUpload1.PostedFile.ContentType
        Dim fs As Stream = FileUpload1.PostedFile.InputStream
        Dim br As New BinaryReader(fs)
        Dim bytes As Byte() = br.ReadBytes(DirectCast(fs.Length, Long))

        Dim dueDate As DateTime = DateTime.Now.AddDays(365)
        Try
            mLMS = New aplLumotechMedicalSurveillance(My.Settings.HRDB)
            mLMS.InsertMedicalResults(filename, contentType, bytes)
        Catch ex As Exception
            Throw ex
        End Try

    End Sub

I am getting the error on the 3rd parameter "bytes" :

      Public Function InsertMedicalResults( ByVal documentName As String, ByVal documentType As String, ByVal document As Byte) As Integer
           Try
               m_oLMS = New dalLumotechMedicalSurveillance(##)
               Return m_oLMS.InsertMedicalResults(documentName, documentType, document)
 
           Catch ex As Exception
               Throw ex
           Finally
               m_oLMS = Nothing
           End Try
       End Function