Flash actionscript 2 variables saved to a txt file

Need something which was possible years ago with 'ftooltext.exe' , to save variables from actionscript 2 (Flash MX2004) to a local text file using Windows 7 and 10. The actionscript to nominate the filename, create the txt file if it doesn't exist, overwrite or append an existing txt file. Hopefully without the need for asp, php, cfm or similar. All should be local. All variables will be letters or numbers only. Don't need any fancy interface, just the bare bone fla file and whatever is needed to create a txt file.