when working with a multiple select list, you need to edit the name of the list to include square brackets, "[]", at the end.
a multiple select list sends the selections as an array in the post.
so you will also need to have code on the action page to work with the array, for example, the following code would convert the array of selections to a comma separated list:
<?php
if($_SERVER["REQUEST_METHOD"] == "POST") {
foreach($_POST as $key => $val) {
if(is_array($_POST[$key])) $_POST[$key] = implode(", ", $_POST[$key]);
}
}
?>