Question about naming folder from tag info

I'm trying to make an action that renames the directoy based on the tags and it works great except I can't seem to get brackets to work.

I want it to look like:

Artist - Album [year]

I cant seem to get the brackets to work.

I tried:
%artist% - %album% [%year%]

first and then after researching I read I need a \ for it to accept the brackets "[" and "]" so then I tried:
%artist% - %album% [%year%]

Which gave the same result, what am I doing wrong. I know the must be some little thing I'm not doing right but I can't figure it out.

Write '['%year%']'

Awesome, thanks. I tried "[" but not '['