couldnt retrieve cookie value!!

[kenny_oh]

i have set the userID and password to cookie but when i want retrieve it, i cant get the value...why?

set cookie:

Session_start();
 
if (numRow > 0) then
      $_SESSION["usr"] = username;
      $_SESSION["pwd"] = pss;
      'do stuff
} else{
      'do stuff
}

Retrieve cookie:

Session_start()
 
       $usr = $_SESSION["usr"];
       $pss = $_SESSION["pwd"];