Google Maps API V3: Print Google Map with Route using Static Maps API using JavaScript

Hello

I am using following javascript function for pint the map in asp.net web application.

  function openWin()
    {
        var myWindow=window.open('','','width=700,height=400');
        var toPrint = document.getElementById('dvMap');
        myWindow.document.write(toPrint.innerHTML);
    
        myWindow.document.close();
        myWindow.focus();
        myWindow.print();
        myWindow.close();
    
    }

But it doesn't show route while click on print and print preview.

Please suggest.

Thanks