> For the complete documentation index, see [llms.txt](https://documentation.freshpaint.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://documentation.freshpaint.io/admin-panel/transformations/fix-bad-data.md).

# Modify Data

You can use Freshpaint's transformation dashboard to set up a transformation to modify data.

To get started, navigate to the [Transformations page](https://app.freshpaint.io/transformations) on your dashboard, and then click "Create New"

![Creating a new transformation to fix bad data](/files/-MKZvPVWlQPSWsLPkRlH)

Select "Modify Data" (if you want to map your events to standard events, you can follow the guide [here](/admin-panel/transformations/standard-events.md)) as your transformation type.

Choose the Freshpaint event and the destination that you want to modify event data for. Transformations can be applied to the following:

| Name                            | Allowed | Example Uses                                                                                                                                                                                                                                                                                                                         |
| ------------------------------- | ------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| Destination + Event             | ✅       | <ul><li>Remove a sensitive property that you don't want sent to a specific destination.</li><li>Rename event or properties to match historical data</li></ul><p><em>Note: If you want to map an event to a destination's standard event, follow the guide</em> <a href="/pages/-MKZtVkSgtrloq-sBx6v"><em>here</em></a><em>.</em></p> |
| Single Destination + all events | ✅       | <ul><li>Remove a sensitive property from every event sent to a destination.</li><li>Convert the type of a property to number to support analysis in a destination.</li></ul>                                                                                                                                                         |
| Single event + all destinations | ✅       | <ul><li>Rename a property that has a typo</li><li>Remove a sensitive property that is being captured by this event.</li></ul>                                                                                                                                                                                                        |
| All events + all destinations   | ❌       | *We do not support modifying every single event going to every single destination.*                                                                                                                                                                                                                                                  |

<figure><img src="/files/2e38fUsfeJ02640zooCI" alt=""><figcaption><p>Selecting a destination and saving the transformation</p></figcaption></figure>

Clicking the `Save & Add Transformations` button will bring you to the transformations dashboard where you can add each transformation step that you need.


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://documentation.freshpaint.io/admin-panel/transformations/fix-bad-data.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.
