LT 3.1, OpenOffice, ngram

I’ve problems in configurating the ngram-files in OpenOffice Windows. I downloaded the german n-gram-files and extracted them to a folder “\ngram\de”. The folder has three subfolders. Which direction do I have do set in the options of the graphic gui of the LanguageTool: The path to “\ngram” or to “\ngram\de” or to one of the subfolders? Thank you.
Albert

Point it to “ngrams”, which must contain a folder “de”, which again must contain “1grams”, “2grams” etc.

Thank you!