Spoof,
This should work..the system was built to support multi byte characters etc.
Have you tried to paste the unicode character into the policy or are you typing it in? Try to make sure you type it in, sometimes there are special characters that get pasted in.
Also look and see if typing using a different OS (Language) or system using a different browser will help.
If that still does not work, then I think you will need to open a case.
Good Luck,
Ronak
PLEASE MARKED SOLVED WHEN POSSIBLE.