Have you ever needed to change the orientation of a text to 90º in flash mode? Were you able to make it works?
To do that you just have to set the swf font in your document configuration. Here is a tip of how to do that:
Put the SWF fonts inside SWF folder. Here are the paths:
<Microstrategy Installation Folder>\Web ASPx\swf
<Tomcat Installation Folder>\webapps\MicroStrategy\swf
In Intelligence Server:
<Microstrategy Installation Driver>\Common Files\MicroStrategy\swf
Here are some fonts that you can Download: Arial, Tahoma and Verdana.
After that, open Developer/Desktop (you can also do it in Web if you want) -> File -> Page Setup -> Flash -> Type:
../swf/Arial.swf in Fonts -> Embed the following fonts:
Now, when you rotate your font, that should work on Flash.
Hope it helps.
GOD bless you.