---
title: Add hidden fields to Formstack
description: "Formstack 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 Formstack**, alongside 6 other lead source data. In this guide, we will show you…"
url: "https://help.leadsources.io/docs/add-hidden-fields-formstack/"
updated: "2024-08-07"
category: Add Hidden fields
---

# Add hidden fields to Formstack

Formstack 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 Formstack**, alongside 6 other lead source data.

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

https://youtu.be/8EJQ4YSYbHo

## Step 1: Open the form

Log in to Formstack.

**Click on the form** you want to edit.

![](http://help.leadsources.io/wp-content/uploads/2024/07/Add-hidden-fields-Formstack-1-1024x461.webp)

## Step 2: Add the hidden fields

On the left panel, drag and drop the field **Short Answer** to your form.

![](http://help.leadsources.io/wp-content/uploads/2024/07/Add-hidden-fields-Formstack-4-1024x461.webp)

You can position the field wherever you want on your form.

In this example, we place it at the bottom of the form, right above the Submit button.

**Repeat this step**until you have added 7 **Short Answer** fields.

## Step 3: Set up the hidden fields

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

Click on the **Short Answer** field you have added.

On the left panel, add the following information for each of the 7 **Short Answer** fields.

### Short Answer field #1

- **FIELD LABEL** = Channel
- Toggle **Hidden**
- **Default Value** = [channel]

![](http://help.leadsources.io/wp-content/uploads/2024/07/Add-hidden-fields-Formstack-2-1024x461.webp)

![](http://help.leadsources.io/wp-content/uploads/2024/07/Add-hidden-fields-Formstack-3-1024x461.webp)

### Short Answer field #2

- **FIELD LABEL** = Source
- Toggle **Hidden**
- **Default Value** = [source]

### Short Answer field #3

- **FIELD LABEL** = Campaign
- Toggle **Hidden**
- **Default Value** = [campaign]

### Short Answer field #4

- **FIELD LABEL** = Term
- Toggle **Hidden**
- **Default Value** = [term]

### Short Answer field #5

- **FIELD LABEL** = Content
- Toggle **Hidden**
- **Default Value** = [content]

### Short Answer field #6

- **FIELD LABEL** = Landing page
- Toggle **Hidden**
- **Default Value** = [landingpage]

### Short Answer field #7

- **FIELD LABEL** = Landing page subfolder
- Toggle **Hidden**
- **Default Value** = [landingpagesubfolder]

You are all set!

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