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

# DEE extraction procedure value output column

> Reference for the `extractProcValueOutputColumn` output column type in a DEE order, which outputs a named value produced by an extraction procedure, including its `header`, `name`, and `format` properties.

## JSON structure

```json theme={"languages":{"custom":["/engine/python-sdk/0.9/languages/pycon.tmLanguage.json"]}}
"columns": [
  {
    "@type": "extractProcValueOutputColumn",
    "header": "head",
    "name": "measure1",
    "format": "STRING"
  },
```

## Property details

| Property | Values                                             | Default Value |
| -------- | -------------------------------------------------- | ------------- |
| header   | String - Header of column                          |               |
| name     | String - Measure name used in extraction procedure |               |
| format   | String of formatter                                | #0.000        |

Read more about [extraction procedures](/design-and-customizations/extraction).