I look in the documentation about Titanium.UI.TabGroup.open method and I read that it doesn't have parameter.
But in KitchenSink I see
I wonder if this is just a little error in the documentation or if I need to know more on how Titanium works.
thanks for the help!
There are quite some API calls undocumented on the website. You'd better file a bug report on http://jira.appcelerator.org/secure/Dashboard.jspa