APEX

Hi everybody
i try to save login and password in cookie to register identifiers
i create two pl sql procedures to do that

Set Username Cookie :

 begin
owa_util.mime_header('text/html', FALSE);

owa_cookie.send(
    name=>'LOGIN_USERNAME_COOKIE',
    value=>:P101_PASSWORD||':'||lower(:P101_USERNAME));


exception when others then null;
end; 

Get Username Cookie

declare
    v varchar2(255) := null;
    c owa_cookie.cookie;
    a wwv_flow_global.vc_arr2;

begin

   c := owa_cookie.get('LOGIN_USERNAME_COOKIE');
   a := htmldb_util.string_to_table(c.vals(1));

:P101_USERNAME := a(2);
:P101_PASSWORD := a(1); 

:P101_TEST1 := a(1);
   
exception when others then null;
end; 

Now, i have problem with my password Item, because i cannot get the password saved in the cookie.
But when i create item TEST1 (type: Text field), i got the password saved in the cookie.
I think that the problem is the type of my password item, but i don't know how to resolve it

Thanks for help