[turba] Help - Admin Address Book

[Darci Tartari]

As I needed an address book read only,  I configured  
turba/config/sources.php  as below
        .....
     'public' => true,
    'readonly' => true,
    'admin' => array( 'foo1', 'foo2' ),
    'export' => true

   In my installation the administrators foo1 and foo2
can only edit or delete its own data. The other data they can not
modify ! Is it correct ?
 I'd like those admins users could delete or modify any data on
that address book that is read only for the others. I am using turba 1.1 
and horde 2.1.

 Is there anybody who could help me ?

Thanks !

Darci Tartari