Possibility to add Crossdomain policy to BOTR?

Hi

I've googeld and searched these forums but I can't seem to find information on whether it is possible to add a crossdomain policy file to my BOTR account.

I did some research in this matter about a year ago, and at that time I did not get it to work.

(I have a Flash application that need to access BitmapData from my BOTR videos)

Is this possible?
Can anyone point me to some documentation regardiing how to get this working?

Best
Bjorn