Ldap modify attribute with com.sun.jndi.ldap.LdapCtxFactory

Hello ,

I,m trying to update a attribute vale in my ldap, i,m using  com.sun.jndi.ldap.LdapCtxFactory class..

I,m able to get the users information but not update them,

I receive the following error

java.lang.NullPointerException
      at com.sun.jndi.ldap.LdapCtx.c_modifyAttributes(LdapCtx.java:1445)
      at com.sun.jndi.toolkit.ctx.ComponentDirContext.p_modifyAttributes(ComponentDirContext.java:267)
      at com.sun.jndi.toolkit.ctx.PartialCompositeDirContext.modifyAttributes(PartialCompositeDirContext.java:184)
      at com.sun.jndi.toolkit.ctx.PartialCompositeDirContext.modifyAttributes(PartialCompositeDirContext.java:173)
      at javax.naming.directory.InitialDirContext.modifyAttributes(Unknown Source)
      at UpdateAttributes.main(UpdateAttributes.java:86)

DirContext ctx = new InitialDirContext(env);
			    String name = "uid=myID,cn=df,ou=customer,o=company";

			

			    // Specify the changes to make
			    ModificationItem[] mods = new ModificationItem[3];

			    // Replace the "mail" attribute with a new value
			    mods[0] = new ModificationItem(DirContext.REPLACE_ATTRIBUTE, new BasicAttribute("type", "UUUU"));

		
			    
			    // Perform the requested modifications on the named object
			    ctx.modifyAttributes(name, mods);

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