Get rid of the [
$q = CGI->new(\&hook [,$sess_ref [,$use_tempfile]]);
That's the example from CGI showing the optional syntax. What it means is that you can use it like
$q CGI->new(\&hook);
or
$q = CGI->new(\&hook, $sess_ref);
or
$q = CGI->new(\&hook, $sess_ref, $use_tempfile);
Once you get that squared away, you should see hook getting called.
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