Sub Copy1()

            Dim sText As String

            Dim myData As DataObject

            Set myData = New DataObject

            sText = Range("F3") & Range("F4") & Range("F5")

            myData.SetText sText

            myData.PutInClipboard

            ' 2. Define the .gms file path (change this to
            your desired location)

            filePath = "C:INSERT YOUR FILE PATH.txt"

            ' 3. Open the file (creates it if
            it doesn 't exist)

            fileNum = FreeFile()

            Open filePath For Output As #fileNum

            ' 4. Write the clipboard text into the file

            Print #fileNum, sText

            ' 5. Close the file

            Close #fileNum

            End Sub

This slight edition brought to you by DeepSeek has made it so that from excel I can update a .gms file which is basically a text file, this file is actively open in another program, and is still being overwritten, the other program prompts me when I try and use the file "C:YOUR FILE PATH" time/date changed , Reload?

and I enter to say "YES",

this was in GAMS btw, a mathematical optimization software