Password Reset

Using ServiceDesk 6 with MS SQL database without Active Directory integration.

I can't seem to find a way to force a password change on first login although table
aaaPasswordProfile seems to provide a way to do this. Changing the PasswordProfile
for a user to 1 for example has no effect and is ignored by SD.

The data in aaaPasswordProfile is as follows:

1 Profile 1 15 3 0 5 True 2
2 Profile 2 -1 -1 -1 -1 False -1

The second last parameter (True) on Profile 1 is CHPASSWD_ONFL which to me implies change password on first login. Can anyone help? Is this not implemented yet?
This functionality is sorely needed.

Thanks for your help, Florent