How to use round brackets (as text) in regex + PowerSearch mode

Hi, I’m trying to check if “Article X(Y)” is handled consistenly in Korean.
(X and Y being numbers, number of digits vary)

So I first enter the following in Source to check if it’s catching what I’m looking for, which it does:
Source Term: article [0-9]{1,}\([0-9]{1,}\)
-No whitespace trimming, regular expressions ON

But when I type the following to compare with the translation, it just gives an error “Source term error: incomplete expression”.
Source Term: article [0-9]{1,}\([0-9]{1,}\)
Target Term: -제[0-9]{1,}조\([0-9]{1,}\)항
-PowerSearch, No whitespace trimming, regular expressions ON

I’m trying to check if “Article X(Y)” are translated in “제X조(Y)항” format.
I can assume it’s related to my using round brackets in regex + PowerSearch, but I don’t know how to make the check work.
Could someone help? Thanks.

If the parentheses in Korean are the same characters as in European languages such as English, try the following search:

Source: "article ([0-9]+)=1\(([0-9]+)=2\)"
Target: -"제@1조\(@2\)항"
PowerSearch: on
Search mode: Regular Expressions

It works perfectly. Thank you so much!