disable close button in a dialog opened from backingbean (primefaces)

Question

there is a bug when opening dialog from ManagedBean with:

requestcontext.getcurrentInstance().opendialog("mydialog",map,null).

I set closable to false in the map as:

map.put(“closable”, false);

but the button close[X] appears in dialog. I also tested:

map.put(“closable”, “false”);
map.put(“toolbar”, false);
map.put(“showCloseIcon”, false);

…. but the button doesn't dispare any help thx (sorry for my english)