login page errors

[eluser]asmaa kamal[/eluser]
i changed the check_login method in main to

Code:

function check_login($userEmail)
{
if ($this->input->post('userPassword'))
{
$user=$this->user_model->GetUsers(array('userEmail'=>$userEmail,'userPassword'=>$this->input->post('userPassword')));
if($user) return true;
else
{$this->form_validation->set_message('check_login','your useremail/password is invalid.');
return false;}}


}
}

it doesnt redirect me to "dashboard" page

is it redirect problem?!?

help plz