This is the javascript I have been using to make this button work but has stopped working with the lastest update.
SaveAsTarget = "F:/Lab/QA Forms/Lab Sheets/" + "LS" + " " + xfa.resolveNode("form1.LabSheet.HeaderSubform.Shift").rawValue + " " + xfa.resolveNode("form1.LabSheet.HeaderSubform.DateTimeField").rawValue + " " + xfa.resolveNode("form1.LabSheet.HeaderSubform.ProductIDdropdown").rawValue + " " + " " + time + ".pdf";
LCB_SaveAs(event.target, SaveAsTarget);
xfa.host.messageBox("Submission Successful!", "Submit", 3, 1);