Unable to extract response data from Sampler

[IamKoN]

I am attempting to access the response data from a sampler (generic in this example) via the JsonExtractor:

extractor = JsonExtractor("variable", "args.vendorname")
http_sampler = (HttpSampler("echo_get_request", "[https://postman-echo.com/post"](https://postman-echo.com/post%22), extractor)
                        .post("vendorname: ${vendorname}, description: ${description}, catalognumber: ${catalognumber}, size: 30, threshold: 0.0", ContentType.APPLICATION_JSON))

In the example in the docs I see that variable is accessed inside another sample like this:

dummy_sampler = DummySampler("dummy ${variable}", "hi dummy")

But I have no way to directly read the value like this. Is there a way to access variable as a python object?

Thank you @eldaduzman