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 <input name="screen" type=submit value="Retrieve data to screen">
 <input name="email"  type=submit value="Retrieve data by email">
 <input name="ftp"    type=submit value="Retrieve data by ftp">

my $response = POST
      $form_url,
     [ 
        some => "options",
        screen    => "Retrieve data to screen",
     ];