Problems with AJAX

Question

I’m trying to delete a photo with ajax.

I was able to collect the data (location of the photo) and now I was trying to receive that same location with another . php file .

What is failing me is that same "transfer". I think I did everything well, but I still can not receive the data.

This is the code

<script type="text/javascript">
$( ".delete" ).click(function() {
    var element = $(this);
    var original_url = element.attr('original_place');
    var thumbnail_url = element.attr('thumbnail_place');

if (confirm('Tem a certeza?')){
    $.ajax({
        type: 'POST',
        url: 'apagar_foto.php',
        data:{foto_original:original_url,foto_thumb:thumbnail_dir,},
        success: function()
        {
            alert('Eliminado');
        }       
    });
};
return false;
});
</script>

As you can see, I store the photo locations in 2 variables.

After a small confirmation I send

Code that was supposed to receive the data

$foto_original = $_POST['foto_original'];
$foto_thumb = $_POST['foto_thumb'];

echo "<script type='text/javascript'>alert('$foto_original');</script>";
echo "<script type='text/javascript'>alert('$foto_thumb');</script>";

Can you tell me where the mistake might be? Sorry for this simple question, but it hasn’t left me for some time. Thank you.