Fedora directory users - May 2007 - changing password

Hi there
this is a very beginner question, sorry if already answered (i didn''t
find it
goggling)

i hame trying to change password using a very base php script, binding with 
user credentials and next to modify password; i get always error for having 
no enough rights to do it:
Warning: ldap_mod_replace() [function.ldap-mod-replace]: Modify: Insufficient 
access in change_password.php on line ...

i bind using user dn and password

$ldapServer = ''192.168.1.1'';
$ldapBase = ''dc=example,dc=com'';
$ldapDn = ''uid'';
$ldapUid = ''ttest'';
$ldapOU = ''ou=People'';
$ldaprdn  = $ldapDn . ''='' . $ldapUid . '','' .
$ldapOU . '','' . $ldapBase;
$ldappass = ''password'';
$ldapConn = ldap_connect($ldapServer);
$ldapBind = ldap_bind($ldapConn,$ldaprdn,$ldappass);
ldap_set_option($ldapConn, LDAP_OPT_PROTOCOL_VERSION, 3);
$entry[''password''] =''test''; 
$result = ldap_mod_replace($ldapConn, $ldaprdn, $entry );
if ($result) echo "Password changed!" ;else echo "There was a
problem!";


what i think, is that i miss something like this:

access to attr=userPassword
        by self write
        by anonymous auth
        by * none

should i insert an aci like this?
some insight or suggestion?
tia
        Maurizio

thnx to all the people has answered me on the list :)
the issue is the name of parameter:
is is not ''password''
but ''userPassword''

byez
        Maurizio