Can't randomize JSON parameters with randomize command.

[DrieVlad]

Hello, I tried for a long time to force randomize JSON data, but I could not. PoC could not be found.
Can you please use an example?

[stamparm]

With latest revision:

$ python sqlmap.py -u .... --data='{"id": 1, "rand": "test"}' --randomize=rand -v 6 --batch | grep rand
{"id": 1, "rand": "flbu"}
{"id": 1, "rand": "pscg"}
{"id": 8867, "rand": "gyba"}
{"id": "1)',\"))()))", "rand": "rqna"}
{"id": "1'RYkiIT<'\">skRQdD", "rand": "vvoq"}