I use the following code in NAV 2017:
Printer := Printer.PdfFilePrinter('C:\IBTS\test_folder\pdf-sample.pdf');
Printer.DefaultPrinterName := 'HP LaserJet Pro MFP M521 PCL 6';
Printer.AdobeReaderPath('C:\Program Files (x86)\Adobe\Reader 11.0\Reader\AcroRd32.exe');
Printer.Print();
However, this only opens Adobe Reader and then nothing happens. How do I make it work, i.e. print the document?