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## `beta:param()`

Reads the given parameter and assigns value to a field in the event.

Parameter | Type | Required | Default Value | Description
--- | --- | --- | --- | ---
`as` | string | required |  | The name of the output field.
`parameter`[a] | string | required |  | The name of the parameter to read.
[a] The parameter name `parameter` can be omitted.

Hide omitted argument names for this function

Show omitted argument names for this function

> Omitted Argument Names

> The argument name for `parameter` can be omitted; the following forms of this function are equivalent:

> logscale Syntax

>     beta:param("value",as="value")

> and:

> logscale Syntax

>     beta:param(parameter="value",as="value")

> These examples show basic structure only.

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