Characters in Tag - Filename

I'm trying to rewrite my filenames using tag data. I'm doing fine with renaming the files but I also want to create a directory structure which is actually also working fine. But I'd like to add [] square bracket characters to the folder structure and they're just kind of being ignored and written without them.

Example: %artist% - [%year%] %album%\%track% - %artist% - %title%

produces Artist - 1999 Album\01 - Artist - Title.mp3
instead of Arist - [1999] Album\01 - Artist - Title.mp3

Is there any type of work around for this?

Please read Important Changes in v2.27