layerObj:
my $layer = $map->getLayerByName('green') or die("Unable to Open Scanned Image Layer!");
$layer->{status} = $mapscript::MS_ON;
$layer->{data} = "$scan.tif";
my $s_layer = $map->getLayerByName('selected') or die('Unable to Open the Selected Parcel Layer!');
$s_layer->{status} = $mapscript::MS_ON;
$s_layer->{data} = $s_shapefile_name;
my $s_class = $s_layer->getClass(0);
$s_layer->{transparency} = 100;
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Selected Polygon Transparent Over Scanned Image
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