[TYPO3] sr_feuser_register Auto log in upon confirmation

[Rocky]

Hey Group,

Did any of you get sr_feuser_register's Autologinupon confirmation work? 
I'm using typo3 3.8.1 with sr_feuser_register 2.2.6. I set 
plugin.tx_srfeuserregister_pi1.enableAutoLoginOnConfirmation = 1
plugin.tx_srfeuserregister_pi1.autoLoginRedirect_url = 
http://www.max-source.com/beta/typo3/index.php?id=78

Yet I still could not get Autologinonconfirmation work when I confirmed 
my registration through email.

Can any of you give me some hints please? Thanks a lot in advance!

Rocky