How do I use dynamic data from a custom event attribute in a push notification?

You can personalize push notifications using dynamic content placeholders, which typically pull data directly from user Tags (like FirstName).

If the specific data you want to insert into the push message is being sent as an attribute of a custom event (and not already stored as a user Tag), you need an extra step:

1. Capture the Event Attribute: Set up an automation or rule (e.g., using Customer Journey) that triggers when your custom event occurs.
2. Save Attribute to Tag: Within that automation, use an action (like "Update User Profile") to take the value from the specific event attribute and save it into a user Tag. You might use a feature referred to as "Dynamic Tag Value" or similar for this mapping.
3. Personalize the Push: In the subsequent push notification action within your automation (or in a separate campaign targeting users with this Tag), insert the dynamic content placeholder for the Tag you created or updated in the previous step (e.g., {{your_tag_name}}).

If the data you need is already stored as a standard user Tag, you can skip the first two steps and directly use the Tag's placeholder in your push message content. Consult the platform's documentation for the correct syntax for dynamic content placeholders.