PASSING AN ARRAY TO PAYPAL REDIRECT

Question

i am trying to pass an array to paypal direct.
the following is the custom code to define the array.
THIS IS THE FIRST MODULE

<?php

$favcolor = $form->data['MealM'];

switch ($favcolor) {
    case "penne":
        echo "Your meal choice  is penne";
       $form->data['amt'] = 20;
        break;
    case "chicken":
        echo "Your meal choice  is chicken!";
$form->data['amt'] = 25;
        break;
    case "pork":
        echo "Your meal choice  is pork!";
$form->data['amt'] = 27;
        break;
    default:
echo "No Match";
}
?>

THIS IS THE SECOND

<?php
$menu = Array();
$amtm = Array();
$num = Array();
$amtm[0] =   $form->data['amt'];
$menu[0]  =   $form->data['MealM'];
$num[0] = 1;

If  ($form->data['FNAMEG']  >  ' ') { 
$form->data['NUMBER'] = 2;

  $favcolor = $form->data['MealG'];
  switch ($favcolor) {
      case "penne":
        echo "Guest Your meal choice  is penne";
       $form->data['amt1'] = 20;
$amtm[1]=$form->data['amt1'] ;
        break;
    case "chicken":
        echo "Guest Your meal choice  is Chicken";
       $form->data['amt1'] = 25;
        break;
$amtm[1]=$form->data['amt1'];
     case "pork":
        echo "Guest Your meal choice  is pork!";
       $form->data['amt1'] = 27;
$amtm[1]=$form->data['amt1'];
        break;
     default:
         echo "Your favorite color is neither red, blue, nor green!";
}
}
?>

<?php

$num[1] = 1;

$menu[1] = $form->data['MealG'];

echo "meals are".$menu[0] ."," . $menu[1] . ".";
echo " meal costs are". $amtm[0] . ", " . $amtm[1]  . ".";
echo " No of meals are". $num[0] . ", " . $num[1]  . ".";

$form->data['cost'] = $form->data['amt'] + $form->data['amt1'];
?>

I pass the following to paypal
$menu
$amtm
$num
i set the upload to 1 and command os _cart
when i get to paypal, there is no data loaded.

what am i missing?

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PASSING AN ARRAY TO PAYPAL REDIRECT