---
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title: Configure Property Placeholders
collection: mulesoft
version: current
locale: en-us
portal_url: https://docs.salesforce.com/mulesoft/current/en-us/mule-runtime/4.3/mule-app-properties-to-configure.md
canonical_url: https://docs.mulesoft.com/mule-runtime/4.3/mule-app-properties-to-configure
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content_type: documentation
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description: MuleSoft Documentation Site
release: "4.3"
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---
---
product: Mule Runtime
version: 4.3
---

# Configure Property Placeholders

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

Instead of using static values for your Mule application configurations, such as connections, you
can create a `.yaml` or a `.properties` file to contain your properties and then reference the
properties from your application.

Configuring a properties file improves the organization and maintainability of your applications.

In a `.yaml` file, the properties take this form:

```yaml
http:
  path: "/service"
  port: "10000"
  host: "my-api.cloudhub.io"
```

In a `.properties` file, the properties take this form:

http.path=/service http.port=10000 http.host=my-api.cloudhub.io

## Create and Configure your Properties File

1.  In Studio, go to the **Package Explorer** view and right-click the `/src/main/resources` folder
    in your project.

2.  Select **New** > **File**:

    ![new-file-properties](/mulesoft/current/en-us/mule-runtime/4.3/_images/mruntime-properties-new-file.png)

3.  Choose a name for your file and set the extension to `.yaml`, or `.properties` if you prefer to
    use this format.

4.  Edit the file to define the properties and values you need.

5.  Add the properties file to your Mule application.

    - From Studio:

      1.  Open the **Global Elements** tab, and click the **Create** button.

      2.  Search for the element called Configuration Properties and click **OK**.

      3.  Click on the **…​** button and navigate to your `.yaml` or `.properties` file.

    - From the XML Editor:

      1.  Include a `<configuration-properties>` element inside `<mule>`, and set its `file`
          parameter with your properties file name. For example:

          ```xml
          <mule>
            <configuration-properties
              file="myConfiguration.yaml"
              doc:name="Configuration properties"
              doc:id="872422be-3571-4a52-a383-a2b0e16859d7" />`
            ...
          </mule>
          ```

## Use the Properties in your Application

Once you have configured your properties file and added it to your project, you can reference its
attributes by using a syntax like this: `${propertyContainer.propertyName}`.

Based on the examples configured in the previous section, to use the `path` and `port` values the
syntax is `${http.path}` and `${http.port}` respectively.

For example, you can configure your Global HTTP Request configuration to use the values defined in
the properties file.

- From Studio:

![properties-file](/mulesoft/current/en-us/mule-runtime/4.3/_images/mruntime-properties-file.png)

- From the XML Editor

  ```xml
  <http:request-config
    name="HTTP_Request_config"
    doc:name="HTTP Request
    configuration" doc:id="7120494c-0540-4ad1-a118-f5b6db3f1456"
    basePath="${http.path}" >
  		<http:request-connection
        host="${http.host}"
        port="${http.port}" />
  </http:request-config>
  ```

## See Also

- [Configure Properties](https://docs.mulesoft.com/mule-runtime/4.3/configuring-properties)