---
title: Apply formula to a field Custom Value
slug: segment/apply-formula-to-a-field-custom-value
createdAt: 2026-01-15T19:54:51.225Z
---

:::hint{type="info"}
This feature is available in **Unaric Segment Plus and Advanced**.
:::

The Apply formula to a field Custom Value allows you to perform different functionalities depending on the type you use.

## Apply formula to a Custom Value field types

| **Type**                           | **Description**                                | **Related Article**                   | **Available on** |
| ---------------------------------- | ---------------------------------------------- | ------------------------------------- | ---------------- |
| **Transform Date**                 | Transform a date field in a DE or DV           | Transform Date Custom Value           | Plus, Advanced   |
| **Timestamp**                      | Add a timestamp when the Selection runs        | Timestamp Custom Value                | Plus, Advanced   |
| **Date Difference**                | Calculate the difference between 2 date fields | Date Difference Custom Value          | Plus, Advanced   |
| **Row Number**                     | Create a new subsequent row number             | Row Number Custom Value               | Plus, Advanced   |
| **Apply any function (SQL) ** | Freely combine as many SQL functions as needed | Apply any function (SQL) Custom Value | Advanced         |