Flashdata and userdata in one function

[eluser]CodeIgniterNoob[/eluser]
I have a function that needs to keep userdata and then echo a success statement on the next page using Flashdata. Its a page that edits posts, but I cant have them both because I get the "headers already sent" error. Can anyone help?

Code:

function edit($id=NULL)
    {
        if ($this->session->userdata('logged_in'))
        {
            echo 'Logged as: '.$this->session->userdata('username');
        }
        else
        {
            redirect('welcome/login','refresh');
        }
        
        if ($this->input->post('name'))
        {
            $this->MPages->updatePage();
            $this->session->set_flashdata('message','Page Updated!');
            redirect('admin/pages/index','refresh');
        }