Cookie/Session value gets destroyed after redirect. Help please :(

[eluser]debasishdebs[/eluser]

Code:

if ($checkgroupid == "1")
{
$data = array(
'username' => $this->input->post('username'),
'group' => $checkgroupid
);
$this->session->set_userdata($data);
echo $this->input->post('username');
echo $this->session->userdata('username');
setcookie("logged_user", $this->input->post('username'), time()+3600);
if(isset($_COOKIE["logged_user"]))
{
  redirect('admin/dashboard');
}
else
{
  echo "blabla";
}

After this it redirects to admin/dashboard controller meaning that cookie was set successfully.

Code:

$data1 = array(
  'username' => $this->session->userdata('username'),
  'group' => $this->session->userdata('group')
  );
  echo $this->session->userdata('username');
  echo "ddd";
  $this->session->set_userdata($data1);
  echo $this->session->userdata('username');
  echo $this->input->cookie('user1');  
  echo "111";

But after this, username is not echoed.
i.e.

Code:

echo $this->session->userdata('username');
echo $this->input->cookie('user1');

None of it works. Help me please.. What am I doing wrong?

Even i have loaded 'cookie' & 'session' libraries.