Select Code to Download

my ($ownsel, $sortby, $letter, $ascdesc, $t);
...
...
    $sort = "ORDER BY " . $sortby . $ascdesc;
...
    print STDERR "base = $base, sort = $sort, sortby = $sortby, ascdes
+c = $ascdesc, letter = $letter\n";

Use of uninitialized value $ascdesc in concatenation (.) or string at 
+/var/www/cgi-bin/ownertbl.pl line 71.,
base = http://192.168.15.222/cgi-bin/ownertbl.pl, sort = ORDER BY name
+, sortby = name, ascdesc = , letter =  ,