tinymce-rails

I am using tinyMCE4 editor inside a Boostrap modal dialog. when I clicked on link icon it opens a new modal dialog box, It displayed fine but the input areas are not editable. <div id="editing" class="modal hide fade" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true"> <form> <label> <span>Description</span> <div id="description"></div> </label> <form> </div> <script> tinymce.init({ selector: 'div#description', inline: false, theme : "modern", schema: "html5", add_unload_trigger: false, statusbar: false, plugins: "link", toolbar: "link | undo redo", menubar: false })