The META tags are HTML, not HTTP headers, so you'd probably want to push them into start_html(). I'm not aware of any "refreshing" HTTP headers.

Update: I can't read, you did push them in the start_html() *DOH* So yes, like duff said, try -content => '5;http://someurl//thiscode.pl'. You can even drop the "URL" part, AFAIK.