Hi, I'm using the below perl code fragment to load many transparent png files into a single swf object. I think I must be mucking up the alpha level in my conversion somewhere, because the transparencies are being lost. A little help please, am I making the mistake in perl, imagemagik or swf formatting ?

my $image = Image::Magick->new;
$image->Read("image_piece03.png");
my $width = 16;
my $height = 16;
my $lossless;
$lossless = SWF::Element::Tag::DefineBitsLossless->new(
      CharacterID => 1,
    BitmapFormat => 5,
      BitmapWidth => $width,
      BitmapHeight => $height,
    );
    my $d = deflateInit() or die "Can't open zlib stream."; 
    for(my $y = 0; $y<$height; $y++) {
    for(my $x = 0; $x<$width; $x++) {
        my @rgba = split /,/, $image->Get("pixel[$x,$y]");
         $rgba[3] = 255-$rgba[3];
        @rgba=@rgba[3,0..2];
        my ($output, $status) = $d->deflate(pack('CCCC',@rgba)); # 4 b
+ytes per pixel.
        die "Compress error." unless $status == Z_OK;
        $lossless->ZlibBitmapData->add($output);    }    }
    my ($output, $status) = $d->flush();
    die "Compress error." unless $status == Z_OK;
    $lossless->ZlibBitmapData->add($output);
$lossless->pack($new);
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