Session Help How do I increase the size?

[eluser]justmelat[/eluser]
I am using the session class and using this $this->session->userdata('item');, in particular I have $this->session->userdata('ALL_INSTRUCTIONS');
this is holding the contents of a db field. A client has entered a ton of text in this field and when we run/open the page, the text will not display. Will debugging, I saw for the length of this variable [$this->session->userdata('ALL_INSTRUCTIONS')] is 1024 (2963).. So the variable will hold only 1024, but the total amt of text is 2963. How can I increase the size that that session var will hold? Thank you in advance.