about kick off oldest user

[Spacelee]

Hi, everyone.
I have set an attribute Simultaneous-Use := 1 to an account name Test, and
when I use Test to double login, I will get the authentication failed the
second time, what I want is when I login the second time, the server just
kick off the first login of Test, is it possible? Do I need to change the
source code if I need to implement this function?

Thanks.
-- 
*Space Lee*
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