[Security] Acegi probléme avec userSearch

Bonjour,
j'ai un probléme, userSearch me retourne rien, voici le log

Code:

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[org.acegisecurity.ui.AbstractProcessingFilter.unsuccessfulAuthentication(AbstractProcessingFilter.java:457)] - Authentication request failed: org.acegisecurity.AuthenticationServiceException: LdapCallback;[LDAP: error code 32 - 0000208D: NameErr: DSID-031001CD, problem 2001 (NO_OBJECT), data 0, best match of:
	'DC=macompagnie,DC=com'

voici le contexte, aparament j'ai pas su comment le configurer pour mon ldap.

Code:

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    <bean id="authenticator" class="org.acegisecurity.providers.ldap.authenticator.BindAuthenticator">
		<constructor-arg><ref local="initialDirContextFactoryTunis2"/></constructor-arg>
		<property name="userDnPatterns">
		<list><value>OU=fils1</value></list>
		</property>
		 <property name="userSearch"><ref local="userSearch"/> </property>
    </bean>
 
   <bean id="userSearch" class="org.acegisecurity.ldap.search.FilterBasedLdapUserSearch">
		<constructor-arg index="0"><value>OU=fils2</value></constructor-arg>
  		<constructor-arg index="1"><value>(cn={0})</value></constructor-arg>-->
  		<constructor-arg index="2"><ref local="initialDirContextFactory" /></constructor-arg>           
  		<property name="searchSubtree"><value>true</value></property>           
	</bean>

merci d'avance.