Image Uploading to Traccar Server

Hey, I want to add feature for user's to upload image in our app. We want to know how Traccar Server handle's media (image) uploading to it's own server so that i save uploaded image url into my user's -> attribute param.
I have seen previous image related questions but can't find solution or answer.
Help me out!
Thanks in advance.

Post Api - URL: https://x912408e9.traccar.com/api/media
Code:

Future<String?> uploadImageToTraccar({
    required File file,
    required String baseUrl,
    required String sessionId,
  }) async {
    try {
      var uri = Uri.parse("$baseUrl/api/media");

      var request = http.MultipartRequest("POST", uri)
        ..headers['Cookie'] = "JSESSIONID=$sessionId"
        ..files.add(await http.MultipartFile.fromPath("image_name", file.path));

      var response = await request.send();

      if (response.statusCode == 200) {
        var respStr = await response.stream.bytesToString();
        var jsonResp = jsonDecode(respStr);

        var mediaId = jsonResp['id'];
        if (mediaId != null) {
          return "$baseUrl/api/media/$mediaId/image_name";
        }
      } else {
        print("Upload failed: ${response.statusCode}");
      }
    } catch (e) {
      print("Error uploading image: $e");
    }
    return null;
  }