How to remove existing form fields when sending a document from a template?

curl -X 'POST' \
'https://api.boldsign.com/v1/template/send?templateId=2b216722-xxxx-xxxx-8fbf-b6e49f9138a9' \
-H 'accept: application/json' \
-H 'X-API-KEY:{Your API Key} ' \
-H 'Content-Type: application/json' \
-d '{
"title": "Invitation form",
"message": "Kindly review and sign this.",
"roles": [
{
"RoleIndex": 1,
"signerName": "David",
"signerEmail": "david@cubeflakes.com",
"signerType": "Signer",
"signerRole": "Signer",
}
 ],
"removeFormFields":["Label1","CheckBox1"]
}'

  
using BoldSign.Api;
using BoldSign.Model;

var apiClient = new ApiClient("https://api.boldsign.com", "{Your API Key}");
var templateClient = new TemplateClient(apiClient);

var templateRole = new Roles(
    roleSignerName:"David",
    roleSignerEmailAddress:"david@cubeflakes.com",
    roleSignerIndex:1,
    locale: Locales.EN);

var roles = new List<Roles>
{
    templateRole,
};

var sendForSignFromTemplate = new SendForSignFromTemplate()
{
    TemplateId = "2b216722-xxxx-xxxx-8fbf-b6e49f9138a9",
    Roles = roles,
    RemoveFormFields = new List<string>(){"Label1","CheckBox1"}
};

var documentCreated =  templateClient.SendUsingTemplate(sendForSignFromTemplate);

import requests
import json

url = "https://api.boldsign.com/v1/template/send?templateId=2b216722-xxxx-xxxx-8fbf-b6e49f9138a9"
payload = {
    "title": "Invitation form",
    "message": "Kindly review and sign this.",
    "roles": [
        {
            "roleIndex": 1,
            "signerName": "David",
            "signerEmail": "david@cubeflakes.com",
        }
    ],
    "removeFormFields": ["Label1", "CheckBox1"]
}

headers = {
    'accept': 'application/json',
    'X-API-KEY': '{Your API Key}',
    'Content-Type': 'application/json;odata.metadata=minimal;odata.streaming=true'
}

response = requests.post(url, headers=headers, json=payload)
print(response.text)

const axios = require('axios');

async function SendTemplate() {
    try {
        const sendResponse = await axios.post(
            'https://api.boldsign.com/v1/template/send',
            {
                roles: [
                    {
                        roleIndex: 1,
                        signerName: "David",
                        signerEmail: "david@cubeflakes.com"
                    }
                ],
                title: 'Simple document',
                message: 'Kindly review and sign this.',
                removeFormFields: ["Label1", "CheckBox2"],
            },
            {
                params: {
                    templateId: '2b216722-xxxx-xxxx-8fbf-b6e49f9138a9',
                },
                headers: {
                    accept: 'application/json',
                    'X-API-KEY': '{Your API Key}', 
                    'Content-Type': 'application/json',
                },
            }
        );

        console.log(JSON.stringify(sendResponse.data)); 
        return sendResponse;
    } catch (error) {
        console.error('Error:', error.response ? error.response.data : error.message);
    }
}

SendTemplate();