Ytukyg

So we now have the below script. Debug highlights OpenTextfile as highlighted in bold
Before it is put into the second part of the update script can we confirm somehow that the text has been read

Function TextFile_PullData()
'PURPOSE: Send All Data From Text File To A String Variable
Dim TextFile As Integer
Dim FilePath As String
Dim FileContent As String
Dim strUser As String

' get the current user name

strUser = CreateObject("WScript.Network").UserName

'or use strUser = CreateObject("WScript.Shell").ExpandEnvironmentStrings("%USERNAME%")



'File Path of Text File

FilePath = "C:Users" & strUser & "TempVFile.txt"



'Determine the next file number available for use by the FileOpen function

TextFile = FreeFile



'Open the text file

**Open FilePath For Input As TextFile**



'Store file content inside a variable

FileContent = Input(LOF(TextFile), TextFile)



'Close Text File

Close TextFile



'Report Out Text File Contents

MsgBox FileContent



'have the function return the data to the calling code

TextFile_PullData = FileContent

End Function

Sub UpdateSubject()
Dim SaveCode As String
Dim KeyWord As String
Dim objItem As MailItem

KeyWord = "TSD"



SaveCode = TextFile_PullData

Set objItem = GetCurrentItem()

objItem.Subject = "[" + KeyWord + "=" + SaveCode + "] " + objItem.Subject

End Sub

Function GetCurrentItem() As Object
Dim objApp As Outlook.Application

Set objApp = Application

On Error Resume Next

Select Case TypeName(objApp.ActiveWindow)

    Case "Explorer"

        Set GetCurrentItem = objApp.ActiveExplorer.Selection.Item(1)

    Case "Inspector"

        Set GetCurrentItem = objApp.ActiveInspector.CurrentItem

End Select



Set objApp = Nothing

End Function

This is not VBScript because you are defining your variables As <something>. In VBScript all variables are of type variant.

Anyway, your Sub UpdateSubject may very well read in the content of the text file, but is does nothing other than show it in a messagebox.
In order to make it return this data instead of just reading it in a local variable that lives only insife that sub, make it a Function like :

Function TextFile_PullData()

    'PURPOSE: Send All Data From Text File To A String Variable

    Dim TextFile As Integer

    Dim FilePath As String

    Dim FileContent As String

    Dim strUser As string



    ' get the current user name

    strUser = CreateObject("WScript.Network").UserName

    'or use strUser = CreateObject("WScript.Shell").ExpandEnvironmentStrings("%USERNAME%")



    'File Path of Text File

    FilePath = "C:Users" & strUser & "TempVFile.txt"



    'Determine the next file number available for use by the FileOpen function

    TextFile = FreeFile



    'Open the text file

    Open FilePath For Input As TextFile



    'Store file content inside a variable

    FileContent = Input(LOF(TextFile), TextFile)



    'Close Text File

    Close TextFile



    'Report Out Text File Contents

    MsgBox FileContent



    'have the function return the data to the calling code

    TextFile_PullData = FileContent

End Function

Next use that info in the UpdateSubject subroutine

Sub UpdateSubject()

    Dim SaveCode As String

    Dim KeyWord As String

    Dim objItem As MailItem

    Dim FileContent As String



    ' here, you use the function to pull the content of the text file and store it in

    ' a local variable called 'FileContent' to use in your inputbox.

    FileContent = TextFile_PullData





    SaveCode = InputBox("Please enter filecode in the format nnn/nnn", "VisualFiles Auto Save", FileContent)



    Set objItem = GetCurrentItem()

    KeyWord = "TSD"



    objItem.Subject = "[" + KeyWord + "=" + SaveCode + "] " + objItem.Subject



    'or skip the inputox alltogether and set the subject directly:

    'objItem.Subject = "[" + KeyWord + "=" + FileContent + "] " + objItem.Subject

End Sub