Updating environment variables via postman API does not reflect on Postman UI

I am trying to run a Newman runner on CI/CD. For that i need some environment variables to be updated during runtime like firebase_tokens and all.

In the CI/CD:

  1. I am generating the required secrets.
  2. Then updating the postman environment variables.
  3. Then i run Newman runner.

The steps 1 and 3 are working as intended.
But the problem, is that the secrets that I am generating in the step 1 is not reflecting on the Postman UI as well as on the runner.

From what I can see in the Postman API docs,
The code to update the environment variables goes like this:

///////////////////////////
// POSTMAN
///////////////////////////

const postmanAPIKey = process.env.POSTMAN_API_KEY;
const environmentId = process.env.POSTMAN_ENVIRONMENT_ID;

if (!postmanAPIKey || !environmentId) {
  console.error("Missing POSTMAN_API_KEY or POSTMAN_ENVIRONMENT_ID");
  return;
}

const response = await fetch(
  `https://api.getpostman.com/environments/${environmentId}`,
  {
    method: "GET",
    headers: {
      "Content-Type": "application/json",
      "X-Api-Key": postmanAPIKey,
    },
  }
).catch((err) => {
  console.error("Failed to get environment", err.message);
  process.exit(1);
});

const data = await response.json();
const updatedEnvs = data.environment.values;

const updates = [{ key: "firebase_auth_token", value: token, enabled: true }];

for (const update of updates) {
  const existingEnv = updatedEnvs.find((env) => env.key === update.key);
  if (existingEnv) {
    existingEnv.value = update.value;
    existingEnv.enabled = true;
    existingEnv.type = existingEnv.type || "default"; // ensure type stays valid
  } else {
    updatedEnvs.push({
      key: update.key,
      value: update.value,
      enabled: true,
      type: "default",
    });
  }
}

console.log("updatedEnvs:", JSON.stringify(updatedEnvs, null, 2));

await fetch(`https://api.getpostman.com/environments/${environmentId}`, {
  method: "PUT",
  headers: {
    "Content-Type": "application/json",
    "X-Api-Key": postmanAPIKey,
  },
  body: JSON.stringify({
    environment: {
      id: data.environment.id,
      name: data.environment.name,
      values: updatedEnvs,
    },
  }),
}).catch((err) => {
  console.error("Failed to update environment", err.message);
  process.exit(1);
});

console.log("Environment updated successfully");

I also read the following post. I could also confirm i have all the env’s are shared in my environment file.