writing text from bottom to top using FOP

Hi,

I need to write some Text on the right side of the PDF I am generating, It
needs to be written from bottom to top.

I had a look at the compliance page of FOP
http://xml.apache.org/fop/compliance.html#fo-property-writingmode

There is stated that it supports at least glyph-orientation-vertical
property, which doesn't seem to work either.

Is there another way to do this?