Generate Pdf via ajax.POST with Rotativa

I want to generate a .pdf file using Rotativa, my ajax call is as follows:

$.ajax({
                    type: "POST",
                    url: "Home/Index",
                    data: { nome: inputName, laudos: laudos, imagem: imgSelecionada },
                });

And the code in Action is this:

[HttpPost]
    public ActionResult Index(UsuarioViewModel user)
    {
        string header = Server.MapPath("~/Views/Home/Header2.html");
        string footer = Server.MapPath("~/Views/Home/Footer.html");

        string customSwitches = string.Format("--header-html \"{0}\" " +
                                              "--header-spacing \"0\" " +
                                              "--footer-html \"{1}\" " +
                                              "--footer-spacing \"5\" ", header, footer);

        var pdf = new ViewAsPdf
        {
            ViewName = "Modelo",
            Model = user,
            CustomSwitches = customSwitches
        };


        return pdf;
    }

Is it really possible to do something like this or should I use another approach? After much research, I have seen in some places that the Rotativa does not work very well with ajax requests.