Why does block progression rl has a underline on the top of the text instead under it

Hi,

I have ran into a problem where I have to deal with rotated text frames.I was using block progression as "tb" for the text in it and thought that it should work but than had to change the text to rl for some reason.

Now when I change the textdecoration of the selected text from this rl block progression one I get a underline over the text instead of below it.

I also tested the same in the adobes online text editor http://labs.adobe.com/technologies/textlayout/demos/

but got the same errorneous result.

please help me get the text with correct underline.

Thanks

Ashar