[TYPO3-ttnews] Translation issue in NEWS_AGE

[Peter Chodyra]

Hi,
My site is confiigured for the Polish language. All text and dates are 
displayed correctly however in tt_news, when the News_Age is displayed it is 
showing: x "days". How can I convert this to the Polish translation i.e. 
"dni"?

Regards,
Peter

This is what I use:
Typo3 4.0.3
tt_news 2.4

Typo3 setup extract:
config.language = pl
config.locale_all = pl_PL