B4J Question Regex.Split with control characters?

Dim data As String
data = 'string received from your serial
Dim dataList() As String
dataList= Regex.Split(chr(4), data)
Dim l As List
l.Initialize2(numbers)
Log(l)

Sub AStreams_NewData (Buffer() As Byte)
    Dim Data As String = BytesToString(Buffer, 0, Buffer.Length, "UTF8") 'Grab the current chunk in buffer
    DataBlock = DataBlock & Data 'Append the data to the exising running buffer. 
    If DataBlock.Contains(Chr(22)) = True And DataBlock.Contains(Chr(23)) = True Then 'We at least have once full packet. 
        RxPacket = DataBlock.SubString2(DataBlock.IndexOf(Chr(22)), DataBlock.IndexOf(Chr(23))+1) 'Grab the detected packet.
        DataBlock = DataBlock.SubString(DataBlock.IndexOf(Chr(23))+1) 'Remove the first detected command from the running buffer.
        Dim Splits() As String = Regex.Split("[\x16\x01\x02\x04\x17]", RxPacket) 'Separate the packet into its individual components. 
        For Each Item In Splits
            Log(Item)
        Next
    End If   
End Sub