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event

ActivityCounterUpdated

Fired when an activity counter is updated.


  export function wixMembers_onActivityCounterUpdated(event) {
    const eventId = event.metadata.id
    const entityId = event.entity._id;
  }

  

onActivityCounterUpdated example

onActivityCounterUpdated

void

---
title: Introduction
---

# Introduction

&nbsp;

<div style="background-color: #FEF1D1; padding: 18px 24px; border-radius: 6px; border: 1px solid #FDB10C; box-sizing: border-box; display: inline-block">
    <b>Developer Preview</b>
    <br/>
    <span>APIs in <a href="https://www.wix.com/velo/reference/api-overview/developer-preview">Developer Preview</a> are subject to change and are not intended for use in production.<br/><a href="mailto:velo-preview-feedback@wix.com">Send us</a> your suggestions for improving this API. Your feedback is valuable to us.</span>
</div>

&nbsp;

Wix Activity Counters events are fired on your site's backend when certain events occur related to marketing tags.
You can write event handlers that react to these events. Event handler functions
receive data that corresponds to the event that fired. Use event handlers
to create custom responses to marketing tags events.

To add an activity counters event handler, add an **events.js** file to the **Backend** section of your site if one does not already exist. All event handler functions for your
site are defined in this file.

Event handler functions are defined using the following pattern:
```javascript
export function <wixAppName>_<eventName>(event) { }
```

For example, an event handler that handles the creation of a marketing tag looks
like this:
```javascript
export function wixMembers_onActivityCounterUpdated(event) { }
```

> **Note:** Backend events don't work when previewing your site.

velo-events_wix-activity-counters.v2

ActivityCounter

appId

string

counters

memberId

revision

entity

metadata

BackendEventMetadata

ID of the entity associated with the event.

entityId

eventTime

Whether the event was triggered as a result of a privacy regulation application (for example, [GDPR](https://support.wix.com/en/article/gdpr-frequently-asked-questions)). For advanced users.

triggeredByAnonymizeRequest

boolean

Counter

count

number

Key of the counter. Must be unique within a given app.

Whether count is available to all (if `public` is false, the counter is only available to the data owner; the site member, or the third party app that created the counter).

public

onActivityCounterUpdated( )