Adding a file as an annotation

Hello!

I have to add a file-annotation for a specific pdf-Form (not lcd).

I tried modified code of the documentation, for testing in the console-window:

this.addAnnot({
page: this.pageNum,
type: "FileAttachment",
});

The icon was created, but there was no dialog to select the filename to be attached.

What I need, is to let the user attach a file (for example an image-file) on a reader-enabled pdf-form.

How could I do this?

I also tried to use the menues, but by using the button-form-field, there is no menue-command to do this.

I also tried this js-code:

app.execMenuItem(Annots:ImportAnnotsFromFile);

but it did not work either, without any remark in the js-console-window...

Any idea, what to do???

Thanks so far!

Dieter Metk