VBO action to update multiple field in node

I want to create an vbo action to update cck multiple field. in this case i wanto to update a field value from '0' to '1'.

This code below ilustrated what i have been made. This code only can update multiple field with index 0. i can not get index from $form_state.

function wespi_po_key_to_value($entity){
switch($entity){
    case 0:
        $value = 'No';
    break;
    case 1:
        $value = 'Yes';
    break;
}
return $value;}


function wespi_po_receive_this_items($entity,$context){
global $user;
$prev_field_receive = $entity->field_receive[LANGUAGE_NONE][0]['value'];
//$nodes = node_load($entity->nid);

if ($prev_field_receive == 0){
    $entity->field_receive[LANGUAGE_NONE][0]['value'] = 1;
}
elseif($prev_field_receive == 1){
    $entity->field_receive[LANGUAGE_NONE][0]['value'] = 0;
}
node_save($entity);
$current_field_receive = $entity->field_receive[LANGUAGE_NONE][0]['value'];
$output = 'previous value : ' . wespi_po_key_to_value($prev_field_receive) . '<br />';
$output .= 'current value : ' . wespi_po_key_to_value($current_field_receive) . '<br />';
drupal_set_message($output);
return;}

Please help how to update several field in $entity->field_receive not only for index 0 but all index base on item selected in vbo form. i have attach in image to describe my problem. this image describe the result my code vbo action to update multiple field/

I really need help, after a week to find a documentation in forums.