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# p

> For the full documentation index, see: https://docs.mulesoft.com/llms.txt

## p(propertyName: String): String

This function returns a string that identifies the value of one of these input properties: Mule
property placeholders, System properties, or Environment variables.

For more on this topic, see
[Configure Properties](https://docs.mulesoft.com/mule-runtime/latest/configuring-properties).

### Parameters

<table><colgroup><col> <col></colgroup><thead><tr><th>Name</th><th>Description</th></tr></thead><tbody><tr><td><p><code>propertyName</code></p></td><td><p>A string that identifies property.</p></td></tr></tbody></table>

### Example

This example logs the value of the property `http.port` in a Logger component.

#### Source

```xml
<flow name="simple">
 <logger level="INFO" doc:name="Logger"
   message="#[Mule::p('http.port')]"/>
</flow>
```