Meta-Character Anomaly Detection Alert - Repetative Non-Word Characters

Hello community,
How to include in white list rules ignore Russian characters in search query ?!
All query like bellow this is block

encode format : URI /search.php?search-q=%D0%BF%D1%80%D1%80%D0%BE%D1%81%D1%82%D0%B5%D1%80%D0%B8%D0%B4

decode format : URI/search.php?search-q=прростерид

I think it’s necesary to include ID rule 960024 in white list, but i don’t now HOW ?