# Edit a monitor in Internet Monitor
Edit a monitor

Using the **Action** menu, you can edit a monitor in Amazon CloudWatch Internet Monitor after you create it. For example, you can edit a monitor to do the following:
+ Change the percentage of application traffic to monitor
+ Set or update the city-networks maximum limit
+ Change health event thresholds for availability or performance scores
+ Add or remove resources
+ Enable or update publishing events to Amazon S3

Note that you can't change the name of a monitor after you create it.

To make changes to a monitor, use the following procedure.

**To edit a monitor**

1. Open the CloudWatch console at [https://console.amazonaws.cn/cloudwatch/](https://console.amazonaws.cn/cloudwatch/).

1. In the left navigation pane, under **Network Monitoring**, choose **Internet monitors**.

1. Choose your monitor, and then choose the **Action** menu.

1. Choose **Update monitor**.

1. Make the desired updates. For example, to change the percentage of traffic to monitor, under **Application traffic to monitor**, select or enter a percentage.

1. Choose **Update**.

For more information about the options that you can update, see the following:
+ To learn more about resources that you add in Internet Monitor, see [Add resources to your monitor](IMMonitorResources.md).
+ To learn more about the application traffic percentage, see [Choose a percentage of traffic to monitor for your application](IMTrafficPercentage.md).
+ To learn more about changing the threshold for health events, see [Change health event thresholds](CloudWatch-IM-get-started.change-threshold.md#IMUpdateThresholdFromOverview).
+ To learn more about the city-networks maximum limit, see [Choose a city-networks maximum limit](IMCityNetworksMaximum.md).
+ To learn more about opting to publish events to S3, see [Publish internet measurements to Amazon S3 in Internet Monitor](CloudWatch-IM-get-started.Publish-to-S3.md).