Print Payment Method on PDF

I would like to print payment metod but no way to print that.

How i can?


[size=10]Last Update: 05.05.2015[/size]

I tried with this

<?php echo $invoice->payment_method; ?>

but it show the payment ID.
How can I show the NAME? I need only the right php-tag


Now i’m using this workaround but is hope there will be an update of this feature.

?php if ($invoice->payment_method == 1) {
            		echo "<h1>CONTANTI</h1>";
		else {
            		echo "<h1>ASSEGNO</h1>";