# Set up event filters Event filters allow you to filter the profile objects to be used in the calculated attribute. For example, an event filter might filter the customer's standard asset objects so that only the assets with **Status is Installed OR Registered** are included in the calculation. **Note** You cannot edit event filters after creating a calculated attribute definition. When you create a calculated attribute, you can create one or more event filters. An event filter consists of the following components: ![\[Event filter components.\]](http://docs.aws.amazon.com/connect/latest/adminguide/images/calculated-attributes-admin-website-event-filters-1.png) + **Filter groups**: Group of filters that you apply to the profile objects. You can add multiple filter groups which are connected by OR relationships. + **Filters**: Filters the profile objects that are included in the calculation of the calculated attribute by specifying attributes, operators, and values. You can add as many filters as needed for your use case. + **Attribute**: The attribute of the object to filter by. You can select attributes from objects stored in the Customer Profiles domain or use the field names defined in the object type definition. for more information about object type mappings, see [Object type mapping definition details in Amazon Connect Customer Profiles](object-type-mapping-definition-details.md). **Note** In Amazon Connect admin website, the attribute dropdown shows the timestamp of the last time any profile object was saved or updated with the attribute. If there is both an attribute of a profile object and a field of an object type with the same name, the event filter prioritizes the object type field name in its filtering. For example, if a profile object has an attribute named **Status** and there is also an object type field named **Status**, the filter will use the object type field **Status** for filtering. + **Operator** — The operator determines the relationship of the attribute to a value you enter. For more information, see [Filter operators](#calculated-attributes-admin-website-event-filter-operators) + **Value** — The value to filter objects with. You can specify multiple values connected by OR relationships. For example, *Asset's Status is Installed or Registered*. Note that values are case-sensitive. For example, *Asset's Status is Installed* returns different results than *Asset's Status is installed*. To view profile objects, use the Amazon Connect Customer Profiles [ListProfileObjects](https://docs.aws.amazon.com/connect/latest/APIReference/API_connect-customer-profiles_ListProfileObjects.html) API. You can optionally create up to two event filters and create a relationship (AND/OR/EXCLUDE) between them. For more details about the relationship, see [Relationship between event filters](#calculated-attributes-admin-website-relationship-between-event-filters). ## Filter operators Operators determine the relationship of the attribute to a value you enter. The following table describes the available operators. [\[See the AWS documentation website for more details\]](http://docs.aws.amazon.com/connect/latest/adminguide/calculated-attributes-admin-website-event-filters.html) **Note** Calculated attributes in the Amazon Connect admin website use the UTC timezone and a default time of 00:00:00 UTC for all time-based filters. You can filter on dates but times are recorded as the same value. If you enter a date of 2024-01-01, the console passes the time as 2024-01-01T00:00:00Z. **Note** By default, event filters are evaluated when a profile object is saved or updated. For instance, if you filter standard asset objects where the `PurchaseDate` is within the last week, the relative time is calculated as *within the last week from the moment the asset object is saved or updated*. This means the filtering results may vary depending on when the object is saved or updated. ## Relationship between event filters Optionally, you can add the second event filter and define a relationship with the first event filter. When you create a calculated attribute in the Amazon Connect admin website, you can have a maximum of two event filters per calculated attribute. If you add the second event filter to your calculated attribute, you can choose one of two ways to specify how the two event filters are connected: + **AND relationship** — If you use the AND relationship to connect two event filters, objects that meets both the first and second event filter, will be included in the calculation. + **OR relationship** — If you use the OR relationship to connect two event filters, objects that meets either the first or second event filter, will be included in the calculation. + **EXCLUDE relationship** — If you use the EXCLUDE relationship to connect two event filters, objects that meets the first event filter but does not meet the second event filter, will be included in the calculation. ## Next steps + [Use your calculated attribute in your contact center via the Flow editor](https://docs.aws.amazon.com/connect/latest/adminguide/customer-profiles-block.html#customer-profiles-block-properties-get-calculated-attributes) + [Use your calculated attribute to define a customer segment](https://docs.aws.amazon.com/connect/latest/adminguide/segmentation-admin-website) + [View Calculated Attributes in Amazon Connect](https://docs.aws.amazon.com/connect/latest/adminguide/calculated-attributes-admin-website-view.html) + [Edit Calculated Attributes in Amazon Connect](https://docs.aws.amazon.com/connect/latest/adminguide/calculated-attributes-admin-website-edit.html) + [Delete Calculated Attributes in Amazon Connect](https://docs.aws.amazon.com/connect/latest/adminguide/calculated-attributes-admin-website-delete.html)