Hello. I want to check if in my string exists any korean letter. According to http://jrgraphix.net/research/unicode_blocks.php the unicode characters for korean language are in 2 ranges u3130-u318F and uAC00-uD7AF I have prepared on http://regexpal.com/ regexp that works. After moving it to autoit it doesn't work. What is wrong? Can anybody help? Regexp that I use is:   test string is   In regexpal it detects letters as it should, but in autoit - not. Any ideas?