non-ascii characters in username when using external-auth in login-method of API

Hi,

Im using the adobe connect API and external-auth=use when logging in a user in our system, and then passing the username in HTTP_AUTH_HEADER

Sadly we have some users with non-ascii characters in their usernames (å,ä,ö) and these always get rejected. I have tried html-encoding of the username, and base64 encoding but with no luck.

Anyone know if this is solvable? THey can login without problems when logging in the "normal" way via webportal.