---
title: Add hidden fields to 123FormBuilder
description: "123FormBuilder 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 123FormBuilder**, alongside 6 other lead source data. In this guide, we will show you…"
url: "https://help.leadsources.io/docs/add-hidden-fields-123formbuilder/"
updated: "2024-08-07"
category: Add Hidden fields
---

# Add hidden fields to 123FormBuilder

123FormBuilder 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 123FormBuilder**, alongside 6 other lead source data.

In this guide, we will show you **how to add hidden fields in 123FormBuilder**to start capturing the source of your leads.

[Add hidden fields to 123FormBuilder](https://www.youtube.com/embed/PindLhlrIoc?feature=oembed)

## Step 1: Open the form

**Log in**to your 123FormBuilder account.

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

![](http://help.leadsources.io/wp-content/uploads/2024/08/Add-hidden-fields-123FormBuilder-1-1024x461.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, insert the "**Short answer**" field in your form. In this example, we position the Short answer field at the bottom of the form, right above the verification field.

![](http://help.leadsources.io/wp-content/uploads/2024/08/Add-hidden-fields-123FormBuilder-2-1024x461.webp)

The "Short answer" setting panel opens on the right:

- Under "**Label**" --> Write **Channel**
- Select the "**Hide field**" box
- Scroll down and under the "**PREFILL**" block --> "**Prefilled Value**" --> Write **[channel]**

![](http://help.leadsources.io/wp-content/uploads/2024/08/Add-hidden-fields-123FormBuilder-3-1024x461.webp)

![](http://help.leadsources.io/wp-content/uploads/2024/08/Add-hidden-fields-123FormBuilder-4-1024x461.webp)

You've created the **channel hidden field**.

Repeat these steps to add the other hidden fields, here is the information for all 7 hidden fields:

| **Label** | **Prefilled Value** |
| --- | --- |
| Channel | [channel] |
| Source | [source] |
| Campaign | [campaign] |
| Term | [term] |
| Content | [content] |
| Landing page | [landingpage] |
| Landing page subfolder | [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 123FormBuilder submissions page, alongside the form's responses (name, email, etc.).