hi!, i'm trying to taint this but it always gives me an error !

my $file = "//Administrator/Web Sites/Learning/myweek_$no.html";

    if ($file =~ /^([-\@\w._:\/]+)$/) {
        $file = $1;              # $data now untainted
    } else {
           print "Please report this error to the admin.  Thanks";  ex
+it; 
    }

open OUTPUT, ">$file.html";
print OUTPUT $template->output;
close OUTPUT;
[download]

I'm trying to learn how to build my scripts in taing mode, but really having trouble here!?

thanks!