[xwiki-devs] append html node to wysiwyg

Hello , I have sent a similar email yesterday which said I can't append html button to wysiwyg in js. Just now I have tried in plugin with gwt. It doesn't work eithor. For example I define a string varirable String button= "<input type='button' value='xx' />" and use execute(button) ,and it will add a button to wysiwyg editor ,but it does nothing to the source ,so ,the things I have done can't be saved.Of course ,execute(rta.getDocument().createButtonInputElement()) doesn't work eithor. I see the RichTextArea which is implemented by xwiki and extended from the RichTextArea of the gwt has a method setHtml() .And it doesn't work just like execute(). At first ,I think this should be a very easy thing .but I have been defeat by it - -! Pleanse ,help me . Thank you .