# Transaction on Birthday

Birthday campaigns are triggered only on the customer birthday- no additional triggers are needed or possible to add.

However, we might want to reward the users for activities at their birthday. Using the similar expression to the previous one, we can say:

```
customer.birthDate.format("d-m") === transaction.purchasedAt.format("d-m")
```

This way, a reward will be given to the members who made any transaction at their birthday, and we can always follow up with other conditions.


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