ssr - you still have not expressed your problem clearly.

From the info you have provided, I don't see how you intend to use the session id, after you extract it.

It seems to me that you want to save user logon credentials and attributes. You don't need session ID's for that - just use session variables, such as :

 # Set a session variable
#
$Session->Contents->SetProperty('Item', 'USERNAME', $userFromForm); 

# Access the Session USER variable
#
 $user = $Session->Contents->Item('USERNAME');
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