> For the complete documentation index, see [llms.txt](https://knowledgebase.qommentary.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://knowledgebase.qommentary.com/qommentary-form/custom-data/adding-input-columns/checkbox.md).

# Checkbox

**Checkbox** controls are ideal for defining binary values with a choice between one of two possible mutually exclusive options (e.g. yes/no).

**Data type**: `boolean`

### Adding a Checkbox control

1\. Edit your sheet\
2\. Click on the **Qommentary Form** extension\
3\. Expand **Input fields** section\
4\. Click on **Add input field**

![](/files/6smlBTFR9Pbo0I8SSNTP)

5\. Select **Checkbox** from the dropdown menu

![](/files/XAbuhqX26svAm4AhvP8h)

6\. Add a **label** to display in the form

![](/files/BlelWPuNiHbMmylRyhpN)

7\. Add a **field** name

![](/files/qcjNtHLtMcwgQ9cSu0i7)

{% hint style="danger" %}
If database is selected as data connection, then field name **must map** to destination table column name.
{% endhint %}

{% hint style="warning" %}
Field name cannot contain spaces.
{% endhint %}

8\. Click on **Done**

**Checkbox** input column can now be updated and saved.

![](/files/UuffzWoGiQqn5RZsjMgw)