{ "widgettype":"VBox", "options":{ }, "subwidgets":[ { "id":"file1", "widgettype":"UtFile", "options":{ "name":"file1", "label":"File 1" } }, { "widgettype":"Text", "options":{ "text":"upload" }, } ], "binds":[ { "wid":"self", "event":"clcik", "action":{ "rfname":"do_upload" } } ] }