Update the Canvas with a custom function

I'm trying to create a function that replaces all the attributes of link, these make the change in the canvas, but don't save it when I try it with the editor.storage() function;

here the code:

 $("button#replace_url").on("click", function(e) {
                e.preventDefault();
                var body = editor.Canvas.getBody().ownerDocument;
                body.querySelectorAll('a').forEach(function(el) {
                    var ahref = el;
                    ahref.setAttribute('href', "http://facebook.com");
                    ahref.setAttribute("target", "_blank");
                });
                editor.store();
                modal.close();
            });