Product adds a Profile Field to User CP

[Shadow]

I have a product that I am creating and I want it to add a new Profile Field to the User CP. The Profile Field would be simply a yes/no boolean and would basically be the on/off switch for the product for the user.

I've got the second step of it down and I know how that'd work however I'm just stuck on how I'd add a new Profile Field using a plugin or something. How would I go about doing so?

Thank you in advance.

[Yellow Slider]

Just add the code from admincp/profilefield.php to you product's install code.

Just look for "if ($_POST['do'] == 'update')" in the file, should be pretty easy from there.