Checkbox Values

[eluser]CI_Newb[/eluser]
I have a few checkboxes in my application. I want them as basically Y/N checkboxes but when checked, Y is submitted, unchecked 0 is submitted.

Code:

<input type="checkbox" name="oe_related" id="oe_related" value="Y">

Not sure how to get N to submit if the checkbox is not checked.

Anyone?

EDIT: forum seemed to have stripped out the set_checkbox part, but its there.