Why i can't unsubscribe members ?? like in previous version ( 2.0.13 )

In previous version i send a mail to list-request@domain.com whith the follow command i the subject

unsubscribe adminpassword address@domain2.com

i try in this version

unsubscribe adminpassword address=address@domain2.com

and don't work

PS: Sorry for my bad english

SiMaR simar@rodriguezmanuel.com.ar

Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.449 / Virus Database: 251 - Release Date: 01/27/2003