# PUT request data

**URL:** <https://community.grafana.com/t/put-request-data/98986>\
**Category:** Grafana k6\
**Created:** [June 30, 2022, 11:49am UTC](https://community.grafana.com/t/put-request-data/98986 "2022-06-30T11:49:34Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![Ratatouille](https://avatars.discourse-cdn.com/v4/letter/r/57b2e6/32.png) [@Ratatouille](https://community.grafana.com/u/Ratatouille)\
**Post date:** [June 30, 2022, 11:49am UTC](https://community.grafana.com/t/put-request-data/98986/1 "2022-06-30T11:49:34Z")

</div>

Hello again, I am pretty new with K6 and load testing in general.  
I am trying to create a PUT request test using the below example. The data I am trying to upload isn’t in a JSON format and when I try to change it it gives “ERRO[0000] ReferenceError: knwf is not defined” Any thought?

```auto
import http from 'k6/http';
export default function () {
  // send custom payload/put data
  const payload = JSON.stringify({
    name: 'Bert'
  });
// send put request with custom header and payload
  const response = http.put('https://httpbin.test.k6.io/put', payload, {
    headers: {
      'Content-Type': 'application/json',
    },
  });
 // show response code in console
  console.log(response.status);
}

```

---

<div class="post-metadata">

**Author:** ![Maksimall89](https://sea2.discourse-cdn.com/grafana/user_avatar/community.grafana.com/maksimall89/32/35954_2.png) [@Maksimall89](https://community.grafana.com/u/Maksimall89)\
**Post date:** [July 1, 2022, 5:27am UTC](https://community.grafana.com/t/put-request-data/98986/2 "2022-07-01T05:27:59Z")

</div>

Hello, I run a script and I don’t see your error:

```auto
max@macbook-m Downloads % k6 run test.js 

          /\ |‾‾| /‾‾/ /‾‾/   
     /\ / \ | |/ / / /    
    / \/ \ | ( / ‾‾\  
   / \ | |\ \ | (‾) | 
  / __________\ |__ | \ __\ \_____ / .io

  execution: local
     script: test.js
     output: -

  scenarios: (100.00%) 1 scenario, 1 max VUs, 10m30s max duration (incl. graceful stop):
           * default: 1 iterations for each of 1 VUs (maxDuration: 10m0s, gracefulStop: 30s)

INFO[0001] 200 source=console

running (00m00.6s), 0/1 VUs, 1 complete and 0 interrupted iterations
default ✓ [========================] 1 VUs 00m00.6s/10m0s 1/1 iters, 1 per VU

     data_received..................: 4.3 kB 7.2 kB/s
     data_sent......................: 524 B 886 B/s
     http_req_blocked...............: avg=440.02ms min=440.02ms med=440.02ms max=440.02ms p(90)=440.02ms p(95)=440.02ms
     http_req_connecting............: avg=143.76ms min=143.76ms med=143.76ms max=143.76ms p(90)=143.76ms p(95)=143.76ms
     http_req_duration..............: avg=149.86ms min=149.86ms med=149.86ms max=149.86ms p(90)=149.86ms p(95)=149.86ms
       { expected_response:true }...: avg=149.86ms min=149.86ms med=149.86ms max=149.86ms p(90)=149.86ms p(95)=149.86ms
     http_req_failed................: 0.00% ✓ 0 ✗ 1
     http_req_receiving.............: avg=99µs min=99µs med=99µs max=99µs p(90)=99µs p(95)=99µs    
     http_req_sending...............: avg=85µs min=85µs med=85µs max=85µs p(90)=85µs p(95)=85µs    
     http_req_tls_handshaking.......: avg=169.5ms min=169.5ms med=169.5ms max=169.5ms p(90)=169.5ms p(95)=169.5ms 
     http_req_waiting...............: avg=149.67ms min=149.67ms med=149.67ms max=149.67ms p(90)=149.67ms p(95)=149.67ms
     http_reqs......................: 1 1.691535/s
     iteration_duration.............: avg=590.17ms min=590.17ms med=590.17ms max=590.17ms p(90)=590.17ms p(95)=590.17ms
     iterations.....................: 1 1.691535/s

```

Can you run [this example](https://k6.io/docs/javascript-api/k6-http/put/) and recheck your error?