[TYPO3-commerce] _LOCAL_LANG doesn't work

[Michael Stein]

Hi there,
I'm trying to change a label in commerce
plugin.tx_commerce_pi2 {
    _LOCAL_LANG.de {
      LANG_ARTICLE_NUMBER =ArtNr
      ARTICLE_NUMBER =ArtNr1
      article_number =ArtNr2
      lang_article_number = ArtNr3
    }

}
But there was no effect at all ..
Doesn't that work at commerce?
Do I something wrong (That would be the first time)?

Greetings Michael