geometry: "polygon" does not work with new openlayers api

[hisie]

var map = new olwidget.EditableMap("id_polygon", {"name":"mipoligono", "geometry": "polygon", "layers": [], "mapDivStyle":{"width": "700px", "height": "700px"}});

raises an exception on:
Uncaught TypeError: Cannot set property 'onUnselect' of undefined olwidget.js:1527