I am currently building a prototype that should allow to print a label on a network printer (Zebra) without any dialog box in between (no window.print). I found following JavaScript code but nothing is printed... I am using the Personal Environment. What am I doing wrong? (the x.x.x.x should of course be replaced with a proper IP address).

SyntaxEditor Code Snippet

var URL = 'http://x.x.x.x/pstprint';
var async = true;
var method = 'POST';
var ZPL = '^XA^FO20,10^AD^FDOutSystems Test^FS^FO20,60^B3^FD" + GetProductionOrder.List.Current.Material.Number + "^FS^XZ';
var request = new XMLHttpRequest();

request.onload = function()
{
    var status = request.status;
    var data = request.reponseText;
}

request.open(method, URL, async);
request.send(ZPL);