I want to only show segments containing Japanese text or punctuation. I thought [\uFF10-\uFF19] might work, but it threw this error.

This is with the Community Advanced Display Filter. The standard Advanced Display Filter does not throw an error, but neither does it return any segments. I can't seem to get Unicode categories like \p{Hiragana} to work either. One issue is that I can't seem to find detailed "how to" docs for Studio regexes. I know it's supposed to be .Net, but it seems a bit idiosyncratic...

Does anybody have any pointers? (Paul? Jesse?)

EDIT Apologies - I have realised that the regex above is only for double-width digits, not hiragana, katakana, punctuation and kanji, but my point is the same: how to filter for Japanese text? 

TIA

Dan