How to insert Cookie value when user register

[ayrancd]

I found this file:

/oc-includes/osclass/UserActions.php

I have a cookie on my website called "codigo" and I found those lines below:

            $input['s_name']         = trim(Params::getParam('s_name'));
            $input['s_website']      = trim(Params::getParam('s_website'));
            $input['s_phone_land']   = trim(Params::getParam('s_phone_land'));
            $input['s_phone_mobile'] = trim(Params::getParam('s_phone_mobile'));
 So I tried to add:

$input['indicacao']      = Params::getServerParam('codigo');
Or
$input['indicacao']      = Params::getParam('codigo');

But doesn't work...

How can I add that cookie value into my columns "indicacao" in the table "t_user"?