Firebird Character Set

I´m trying to configure iso8859_1 character set for my fireruby connection with no luck.

my database.yml looks like::

<snipet>

development:   adapter: firebird   database: rails_app   host: localhost   charset: ISO8859_1

</snipet>

but it seem´s to ignore the charset param. Anyway, every doc/messages related to fireruby looks very outdated, is it being supported/updated/ envolved at all ?

Thanks for any input!

Regards, Anderson