matplotlib.pyparsing.ParseFatalException: Expected end of math '$'

Hi,

Thanks for the previous replies. They were very helpful.

I would like to use '[' and ']' in my ylabels. But, when I try to use
them I get the following error

Lots of tracebacks here ...
matplotlib.pyparsing.ParseFatalException: Expected end of math '$'
$V_{Fe_{53}M} - V_{Fe_{54}}\ \ [\AA^{3}]$ (at char 0), (line:1, col:1)

When I replace the [, ] with (, ), I have no problems. Is there any
work around to get the [, ]?

Cheers,
Chaitanya