ipv6-site registration problem

[huaning(bii)]

Hi.Bob.

I encountered a registration problem 
when I tried to register a ipv6-site object
in 6bone databse.
The error message said 
    % ERROR: ***You are not authorized to do network updates***

and My register info is :
    ipv6-site: BII
    origin: AS10109
    descr: BII Group Holdings Ltd IPv6 Testbed
    contact: HN2-6BONE
    mnt-by: MNT-BII
    changed: nhua@biigroup.com 20001215
    source: 6BONE
    country: CN
    prefix: 3ffe:510::/32

What's the matter ?  How can I solve the problem?
Thank you.

_________________________________________________
    Hua Ning
    Beijing Internet-networking Institute(BII Group Holdings Ltd),
    110E 11F China Merchants Tower,
    No.2 Dong Huan Nan Lu, Chao Yang District,
    Beijing,China
    Zip Code: 100022
    Tel:+86-10-65660290-223
    Fax:+86-10-65660297
_________________________________________________