---
title: Add hidden fields in FormAssembly
description: "FormAssembly is a form builder that allows you to capture leads on your website. With Leadsources, you can **track the source of the leads generated in FormAssembly**, alongside 6 other lead source data. In this guide, we will show you **how to…"
url: "https://help.leadsources.io/docs/add-hidden-fields-formassembly/"
updated: "2024-11-23"
category: Add Hidden fields
---

# Add hidden fields in FormAssembly

FormAssembly is a form builder that allows you to capture leads on your website.

With Leadsources, you can **track the source of the leads generated in FormAssembly**, alongside 6 other lead source data.

In this guide, we will show you **how to add hidden fields in FormAssembly** to start capturing the source of your leads.

[How to add hidden fields in FormAssembly](https://www.youtube.com/embed/R6b_Ci2eGp0?feature=oembed)

## Step 1: Open/create a form

**Log in**to FormAssembly.

Click on the form you want to edit. Or click **New Form** to start from scratch.

![](http://help.leadsources.io/wp-content/uploads/2024/11/Hidden-fields-FormAssembly-1.webp)

## Step 2: Add the hidden fields

**Context:** In this step, we set up the hidden fields one by one to store the lead source data captured by Leadsources.

To add a hidden field, click **ADD CONTENT** --> Hoover to **Question**--> Click **Hidden Field**

![](http://help.leadsources.io/wp-content/uploads/2024/11/Hidden-fields-FormAssembly-7-1024x657.webp)

A new hidden field is added to your form.

We will now create the hidden field that will store the "Channel" data fetched by Leadsources:

- Rename the hidden field to **Channel**.
- Click **Options**. On the left panel, select **Default Value**.
- Write **[channel]**.
- Press enter to save.

![](http://help.leadsources.io/wp-content/uploads/2024/11/Hidden-fields-FormAssembly-8-1024x657.webp)

![](http://help.leadsources.io/wp-content/uploads/2024/11/Hidden-fields-FormAssembly-2.webp)

This will indicate Leadsources that we want the channel value to be stored in the "Channel" hidden field.

We will use the same process to add the remaining hidden fields:

| **Hidden Field name** | **Default Value** |
| --- | --- |
| Source | [source] |
| Campaign | [campaign] |
| Term | [term] |
| Content | [content] |
| Landing page | [landingpage] |
| Landing page subfolder | [landingpagesubfolder] |

Click **Save**.

![](http://help.leadsources.io/wp-content/uploads/2024/11/Hidden-fields-FormAssembly-9-1024x657.webp)

## Step 3: Embed your form

To embed your form in your website, click **Publishing** on the left panel.

![](http://help.leadsources.io/wp-content/uploads/2024/11/Hidden-fields-FormAssembly-3.webp)

Scroll down to "**Publish on your own website**", and click **You may want it as a full HTML page.**

![](http://help.leadsources.io/wp-content/uploads/2024/11/Hidden-fields-FormAssembly-5-1024x657.webp)

Copy the html and add it in your website.

![](http://help.leadsources.io/wp-content/uploads/2024/11/Hidden-fields-FormAssembly-6-1024x657.webp)

You are all set!

Leadsources will **capture****and store the leads data****in these 7 hidden fields**. This data will be visible from the FormAssembly submissions page, alongside the form's responses (name, email, etc.).