How to change Cloze format with Regex

[saravanasmailbox]

The Neuracache Regex link for Cloze is working fine. But Instead of picking the word which is enclosed between single curly bracket {}, I want it to catch words which is enclosed with double curly bracket {{}}.

I found that curly bracket presents in my programming notes. Therefore I convert those codes into close deletion. I need to fix it. I thought If we use {{}} instead of {} it would solve it.

Please let me know what to do.

Thanks.