How do I insert data from a text file into a multiple selection with a VBA post-query?

[Palookaville]

Hello SAP Community. I need to paste data from a text file into multiple selections.

I have code that works in part:

    Dim boundary As String
    Dim formData As String
 
    Dim fileBytes() As Byte
    Dim fullRequest() As Byte
    Dim filePath As String
    Dim file As String
    Dim byteContent() As Byte
    Dim i As Long
    Dim fileNumber As Integer
    Dim fileSize As Long
    Dim formDataLength As Long
    Dim totalLength As Long
 
    filePath = "D:Macro\WebSAPtest\exceptions.txt"
    file = "exceptions.txt"
 
    ' Random boundary generation
 
    boundary = "----WebKitFormBoundary" & GenerateBoundary()
    formData = "--" & boundary & vbCrLf
    formData = formData & "Content-Disposition: form-data; name=""updownbase64in""" & vbCrLf & vbCrLf
    formData = formData & vbCrLf
    formData = formData & "--" & boundary & vbCrLf
    formData = formData & "Content-Disposition: form-data; name=""updownchunkstatusin""" & vbCrLf & vbCrLf
    formData = formData & vbCrLf
    formData = formData & "--" & boundary & vbCrLf
    formData = formData & "Content-Disposition: form-data; name=""updownfilesize""" & vbCrLf & vbCrLf
    formData = formData & fileSize & vbCrLf
    formData = formData & "--" & boundary & vbCrLf
    formData = formData & "Content-Disposition: form-data; name=""LOCALFILE1""; filename=""exceptions.txt""" & vbCrLf
    formData = formData & "Content-Type: application/octet-stream""" & vbCrLf & vbCrLf
    formData = formData & ReadFileContent(filePath) & vbCrLf
    formData = formData & "--" & boundary & "--" & vbCrLf
    ' send request
 
     xmlHttp.Open "POST", "http://" & sap_web_server & link & "post", False
     xmlHttp.setRequestHeader "Content-Type", "multipart/form-data; boundary=" & boundary
     xmlHttp.send formData

It writes two numbers to one cell in encoded form:
u3035\u3330\u3134\u3737\u0A0D\u3035\u3330\u3136\u3434\u0A0D

Also i have python code that works correctly:

with open(os.path.join(input_folder, 'exceptions.txt'), 'rb') as exceptions_file:
    r=session.post(f"http://{sap_web_server}{link}post",
        files={'exceptions.txt': exceptions_file},
        params={'SEC_SESSTOKEN': sessiontoken,
                'updownchunkstatusin': '',
                'updownbase64in': '',
                'LOCALFILE1': '(binary)'})

 how to change the code so that data is written to different cells, the values in the text file can be more than 300. what am I doing wrong?