Hi there, Currently I try to match the following pattern: ``` json { "entries": [ { "id": @string@.matchRegex('/^[a-f0-9]{8}\-[a-f0-9]{4}\-4[a-f0-9]{3}\-(8|9|a|b)[a-f0-9]{3}\-[a-f0-9]{12}$/') } ] } ``` But somehow the matcher does not detect the regex correctly.