[TYPO3-mvc] flashmessages in extbase 1.3?

[Christian Essl]

Hi,

What is the current spelling for flashmessages in extbase and fluid? Is this feature implemented yet in 1.3.0?
The extension, the extension_builder builds uses:

$this->flashMessageContainer->add('message');
and
<f:flashMessages />

According to the AbstractController, this must be right. But the messages never show up. And I can't find any information on this, which isn't too old. :(