> ## Documentation Index
> Fetch the complete documentation index at: https://help.hiredata.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Variables

> Use HireData variables to personalise emails, WhatsApp messages, forms, and automations with candidate data pulled straight from your connected apps.

With variables you can drop live data, like a candidate's name, a job title, or a salary, straight into your emails, WhatsApp messages, forms, and automations.

## What a variable looks like

A variable is a field key wrapped in double curly braces:

```
Hi {{ candidate.first_name }}, thanks for applying to {{ job.title }}!
```

When this is sent to a candidate named Sofia applying for a Backend Engineer role, it becomes:

```
Hi Sofia, thanks for applying to Backend Engineer!
```

The spaces inside the braces are optional:

* `{{candidate.first_name}}` and `{{ candidate.first_name }}` behave the same.

## Where you can use variables

You can use variables anywhere you write content that gets sent or stored:

* **Email** — subjects and bodies
* **WhatsApp** — messages and templates
* **Forms** — questions and follow-up logic
* **Automations** — field mappings and scheduled tasks

## Providing a fallback

If a field is empty for a particular record, the variable is replaced with nothing. To show a default instead, use the [`default`](/variables/modifiers#fallback) modifier:

```
Hi {{ candidate.first_name | default: "there" }}!
```

If the candidate has no first name, this sends "Hi there!".

## Transforming values with modifiers

Variables can do more than insert raw data. A **modifier** changes how the value appears. It can uppercase text, format a date, round a number, and much more. You add a modifier with a pipe (`|`):

```
{{ candidate.first_name | uppercase }}        → SOFIA
{{ job.salary | format_currency: "EUR" }}      → €65,000.00
{{ application.created_at | format_date: "d M Y" }}  → 14 Mar 2026
```

You can chain several modifiers, and each one acts on the result of the previous:

```
{{ candidate.last_name | lowercase | capitalise }}
```

See the full list on the [Modifiers](/variables/modifiers) page.


## Related topics

- [How WhatsApp Templates Work](/apps/messaging/whatsapp/how-whatsapp-templates-work.md)
- [WhatsApp Error Codes Explained](/apps/messaging/whatsapp/whatsapp-error-codes-explained.md)
- [Add an activity or item in Carerix with HireData](/apps/carerix/add-an-activity-or-item-in-carerix-with-hiredata.md)
- [Modifiers](/variables/modifiers.md)
- [Add an activity or item in Vincere with HireData](/apps/vincere/add-an-activity-or-item-in-vincere-with-hiredata.md)