Facades.Form() not displaying the textbox form fields with background color and border

Hi,

I have a PDF with form fields in it. In below, i'm setting the background color, value, style and border width for the text box form fields "allergies_label_pg1", "allergies_label_pg3" and saving to "result.pdf".

var doc = new Aspose.Pdf.Document(dataDir + @"\sample.pdf");

                    var textBoxField1 = doc.Form["allergies_label_pg1"] as TextBoxField;

                    textBoxField1.Value = "sample text value 1";

                    textBoxField1.Characteristics.Background = System.Drawing.Color.FromArgb(255, 204, 204);

                    textBoxField1.Characteristics.Border = System.Drawing.Color.Red;

                    textBoxField1.Border.Width = 1;

                    textBoxField1.Border.Style = Aspose.Pdf.InteractiveFeatures.Annotations.BorderStyle.Solid;

                    var textBoxField2 = doc.Form["allergies_label_pg3"] as TextBoxField;

                    textBoxField2.Value = "sample text value 2";

                    textBoxField2.Characteristics.Background = System.Drawing.Color.FromArgb(255, 204, 204); ;

                    textBoxField2.Characteristics.Border = System.Drawing.Color.Red;

                    textBoxField2.Border.Width = 1;

                    textBoxField2.Border.Style = Aspose.Pdf.InteractiveFeatures.Annotations.BorderStyle.Solid;

                    // save the resultant file

                    doc.Save(tmpPath + @"\result.pdf");

                    doc.Dispose();

Later, i'm filling the other form fields using the below code.

var pdfForm = new Aspose.Pdf.Facades.Form();

pdfForm.BindPdf(tmpPath + @"\result.pdf");

pdfForm.Save(tmpPath + @"\finalResult.pdf")

The problem here is that the text box fields "allergies_label_pg1" and "allergies_label_pg3" are not visible in the "finalResult.pdf" file.

Any help will be appreciated.