I managed to make it work with one variable per line, such that every update the bottom line would become the one above and so forth, but it's a lot of work when there are a lot of windows involved. I can certainly make something work, but if you get to add the text log function, especially if it keeps every message ever put to that window in a scrollable fashion, do please let me know!
Also, I should add that plugins that add sound to each letter don't work with this, likely because this doesn't use the default text function. If you find a way to make that work let me know as well, as your plugin is excellent for custom ways to display messages. I don't even use default message boxes anymore at this rate.
Hope you had good holidays!