Attach File in form through REST API

I have simple form with few text fields and one file upload. I can easily fill the form and submit it without attachment thriugh REST API. How do I attach the file to this task?

For filling text fields IA m calling :
and for attachment I am using :

I am tying in this way:

LinkedMultiValueMap<String, Object> map = new LinkedMultiValueMap<>();
FileSystemResource value = new FileSystemResource(new File(fileTouploadFullPath));
map.add(“file”, value);
HttpHeaders headers = new HttpHeaders();
headers.set(“Authorization”, "Basic " + base64ClientCredentials);
HttpEntity<LinkedMultiValueMap<String, Object>> requestEntity = new HttpEntity<>(map, headers);
RestTemplate restTemplate = new RestTemplate();
ResponseEntity resposne =“http://localhost:8080/flowable-task/runtime/tasks/"+taskId+"/attachments”, HttpMethod.POST, requestEntity, String.class);

System.out.println(resposne.getStatusCode()+" "+resposne.getBody());

I am getting Response Status 302 FOUND with empty body. In the background process and task is created with no attachment

can someone help… I want to upload file in form by calling REST API. How can it be done?

You can use

POST flowable-task/content-api/content-service/content-items

to upload attachments.