Search plugin and custom search filters

HI,

I can’t find where I should set the custom LDAP search filter used by “search plugin”. I have some searchs that doesn’t work as I expected, for example if i search a user by last name Openfire sends “cn=last_name*” instead of “cn=last_name”. If a user wants to search by a portion of a name or lastname, it doesn’t work.

regards, Diego