curl --request PATCH \
  --url https://app.launchdarkly.com/api/v2/projects/{projectKey}/environments/{environmentKey}/adaptive-triggers/{triggerID} \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "task": {
    "instructions": [
      {
        "variationId": "046b6c7f-0b8a-43b9-b35d-6489e6daee91",
        "kind": "updateFallthroughVariationOrRollout",
        "ruleId": "046b6c7f-0b8a-43b9-b35d-6489e6daee91"
      },
      {
        "variationId": "046b6c7f-0b8a-43b9-b35d-6489e6daee91",
        "kind": "updateFallthroughVariationOrRollout",
        "ruleId": "046b6c7f-0b8a-43b9-b35d-6489e6daee91"
      }
    ]
  },
  "name": "name"
}
'

import requests

url = "https://app.launchdarkly.com/api/v2/projects/{projectKey}/environments/{environmentKey}/adaptive-triggers/{triggerID}"

payload = {
    "task": { "instructions": [
            {
                "variationId": "046b6c7f-0b8a-43b9-b35d-6489e6daee91",
                "kind": "updateFallthroughVariationOrRollout",
                "ruleId": "046b6c7f-0b8a-43b9-b35d-6489e6daee91"
            },
            {
                "variationId": "046b6c7f-0b8a-43b9-b35d-6489e6daee91",
                "kind": "updateFallthroughVariationOrRollout",
                "ruleId": "046b6c7f-0b8a-43b9-b35d-6489e6daee91"
            }
        ] },
    "name": "name"
}
headers = {
    "Authorization": "<api-key>",
    "Content-Type": "application/json"
}

response = requests.patch(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'PATCH',
  headers: {Authorization: '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    task: {
      instructions: [
        {
          variationId: '046b6c7f-0b8a-43b9-b35d-6489e6daee91',
          kind: 'updateFallthroughVariationOrRollout',
          ruleId: '046b6c7f-0b8a-43b9-b35d-6489e6daee91'
        },
        {
          variationId: '046b6c7f-0b8a-43b9-b35d-6489e6daee91',
          kind: 'updateFallthroughVariationOrRollout',
          ruleId: '046b6c7f-0b8a-43b9-b35d-6489e6daee91'
        }
      ]
    },
    name: 'name'
  })
};

fetch('https://app.launchdarkly.com/api/v2/projects/{projectKey}/environments/{environmentKey}/adaptive-triggers/{triggerID}', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://app.launchdarkly.com/api/v2/projects/{projectKey}/environments/{environmentKey}/adaptive-triggers/{triggerID}",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "PATCH",
  CURLOPT_POSTFIELDS => json_encode([
    'task' => [
        'instructions' => [
                [
                                'variationId' => '046b6c7f-0b8a-43b9-b35d-6489e6daee91',
                                'kind' => 'updateFallthroughVariationOrRollout',
                                'ruleId' => '046b6c7f-0b8a-43b9-b35d-6489e6daee91'
                ],
                [
                                'variationId' => '046b6c7f-0b8a-43b9-b35d-6489e6daee91',
                                'kind' => 'updateFallthroughVariationOrRollout',
                                'ruleId' => '046b6c7f-0b8a-43b9-b35d-6489e6daee91'
                ]
        ]
    ],
    'name' => 'name'
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: <api-key>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://app.launchdarkly.com/api/v2/projects/{projectKey}/environments/{environmentKey}/adaptive-triggers/{triggerID}"

	payload := strings.NewReader("{\n  \"task\": {\n    \"instructions\": [\n      {\n        \"variationId\": \"046b6c7f-0b8a-43b9-b35d-6489e6daee91\",\n        \"kind\": \"updateFallthroughVariationOrRollout\",\n        \"ruleId\": \"046b6c7f-0b8a-43b9-b35d-6489e6daee91\"\n      },\n      {\n        \"variationId\": \"046b6c7f-0b8a-43b9-b35d-6489e6daee91\",\n        \"kind\": \"updateFallthroughVariationOrRollout\",\n        \"ruleId\": \"046b6c7f-0b8a-43b9-b35d-6489e6daee91\"\n      }\n    ]\n  },\n  \"name\": \"name\"\n}")

	req, _ := http.NewRequest("PATCH", url, payload)

	req.Header.Add("Authorization", "<api-key>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.patch("https://app.launchdarkly.com/api/v2/projects/{projectKey}/environments/{environmentKey}/adaptive-triggers/{triggerID}")
  .header("Authorization", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"task\": {\n    \"instructions\": [\n      {\n        \"variationId\": \"046b6c7f-0b8a-43b9-b35d-6489e6daee91\",\n        \"kind\": \"updateFallthroughVariationOrRollout\",\n        \"ruleId\": \"046b6c7f-0b8a-43b9-b35d-6489e6daee91\"\n      },\n      {\n        \"variationId\": \"046b6c7f-0b8a-43b9-b35d-6489e6daee91\",\n        \"kind\": \"updateFallthroughVariationOrRollout\",\n        \"ruleId\": \"046b6c7f-0b8a-43b9-b35d-6489e6daee91\"\n      }\n    ]\n  },\n  \"name\": \"name\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://app.launchdarkly.com/api/v2/projects/{projectKey}/environments/{environmentKey}/adaptive-triggers/{triggerID}")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Patch.new(url)
request["Authorization"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"task\": {\n    \"instructions\": [\n      {\n        \"variationId\": \"046b6c7f-0b8a-43b9-b35d-6489e6daee91\",\n        \"kind\": \"updateFallthroughVariationOrRollout\",\n        \"ruleId\": \"046b6c7f-0b8a-43b9-b35d-6489e6daee91\"\n      },\n      {\n        \"variationId\": \"046b6c7f-0b8a-43b9-b35d-6489e6daee91\",\n        \"kind\": \"updateFallthroughVariationOrRollout\",\n        \"ruleId\": \"046b6c7f-0b8a-43b9-b35d-6489e6daee91\"\n      }\n    ]\n  },\n  \"name\": \"name\"\n}"

response = http.request(request)
puts response.read_body

{
  "resourceKind": "flag",
  "createdAt": 6,
  "task": {
    "instructions": [
      {
        "variationId": "046b6c7f-0b8a-43b9-b35d-6489e6daee91",
        "kind": "updateFallthroughVariationOrRollout",
        "ruleId": "046b6c7f-0b8a-43b9-b35d-6489e6daee91"
      },
      {
        "variationId": "046b6c7f-0b8a-43b9-b35d-6489e6daee91",
        "kind": "updateFallthroughVariationOrRollout",
        "ruleId": "046b6c7f-0b8a-43b9-b35d-6489e6daee91"
      }
    ]
  },
  "resourceKey": "resourceKey",
  "name": "name",
  "id": "046b6c7f-0b8a-43b9-b35d-6489e6daee91",
  "triggerSource": {
    "alertId": 0,
    "type": "observabilityAlert"
  },
  "enabled": true,
  "updatedAt": 1
}

{
  "code": "code",
  "message": "message"
}

{
  "code": "code",
  "message": "message"
}

{
  "code": "code",
  "message": "message"
}

{
  "code": "code",
  "message": "message"
}

{
  "code": "code",
  "message": "message"
}