How to add an annotation PopUp?

Hello, i have problem.
Server interacts with our program requires each text annotations to annotate popup. But radaee plugin not supported to add this annotation(Annotation.getType == 16).
How to add an annotation PopUp?

using Page.AddAnnotText to add text note annotation, which has a popup editbox.

If I add text annotation using Acrobat Raeder, I get 2 annotations, text id = 1 and annotation popup id = 16.

page.GetAnnotCount() = 2;
page.GetAnnot(0)= 1 (Text annotation)
page.GetAnnot(1)= 16 (Popup annotation)

How do I replicate using plug these two annotations?
My server requires annotations in this form

May you provide a PDF sample?
It will be simpler to understand your need.

Well, here is a sample PDF that I need to get. If I create a text annotation, I need to add an annotation popup (type = 16), as in the attached example. My server only works with this format. How can I add an annotation type = 16?
Thank you for your help.

We're working on that, soon we will release a solution.