> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://help.textit.com/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# Updating a Custom Contact Field Type

New custom contact fields created in a flow are automatically set to the default **text** field type. You can update the field type from **text** to **number**, **date & time**, **state**, **district**, or **ward**.

It's important to note that only a **date & time** field type can be used in campaign events. 

In the example below, we're updating the field type to Date & Time so the field can be used in a campaign event.

First, we'll click on the 'Fields' button within the 'Contacts' page:  

![](https://storage.crisp.chat/users/helpdesk/website/-/7/a/9/f/7a9fc4558a9de000/screenshot-2026-08-05-at-12511_qcxm8q.png)

Next, we'll click on the contact field to update and click on the 'Edit' button.

![](https://storage.crisp.chat/users/helpdesk/website/-/7/a/9/f/7a9fc4558a9de000/screenshot-2026-07-30-at-20422_1y4lvpw.png)
 Then select **Date & Time** from the Field Type dropdown menu and click 'update': 

![](https://storage.crisp.chat/users/helpdesk/website/-/7/a/9/f/7a9fc4558a9de000/screenshot-2026-07-30-at-20440_143oovr.png)
This will update the custom contact field to a **Date & Time** field that can be used in a campaign event. 

See more about [creating campaigns](/en/article/creating-a-campaign-11c9198/) and [campaign events](/en/article/adding-a-campaign-event-1amovrz/) in our Help Docs. 

Questions? Send us a message via the support widget in the bottom right corner of your browser.