Add Page with Button in Reader

Possible? Not possible?

I followed the tutorial here... https://acrobatusers.com/tutorials/how-to-build-a-button-that-creates-a-new-page

I have read all the current discussions I can find on this...

From what I understand—using a template and calling it with this simple little script

var a = this.getTemplate("Add Page"); a.spawn();

should work in Reader DC. But its not.

I get a JS error NotAllowedError: Security settings prevent access to this property or method. Template.spawn:2:Field Button4:Mouse Down