Solved
Does JSON RegEx assertions support regex shortcuts
If I use JSON Path asseration for $..id and expected resutl is [121,130] the assertion passes. When using the JSON RegEx aseration I set JSON Path Expression to $..id[0] and RegEx to \d and expected ...
That is the expected behaviour.
In your case, the result is 121 which can't matched with regex \d. It is supposed to be matched by expression \d+ as there are multiple digits.
Try it out and see.
