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

# When Passing Data in Integrations or Webhooks, Should I Select "data" or "data.source"?

> Use "data" for the actual value — "data.source" only tells you how that value was evaluated, not what it is.

## Applies to

* Integrations
* Webhooks
* Marketing Data

## Answer

In integrations or webhooks, dynamic data can be passed by clicking the substitution picker (`< >`) in the UI and selecting the field you want.

When choosing a field, you'll see both "data" and "data.source" options — choose "data," not "data.source." The `.source` attribute represents the method of evaluation (AI, API, Expression, Dynamic Attribution, and so on) rather than the actual data value itself.

## Where to go next

* [Capturing Marketing Data](/s/article/capturing-marketing-data)
* [Static Marketing Data Mapping](/s/article/static-marketing-data-mapping)