# Interface IChangeableAnalyticsMetaObject

The `IChangeableAnalyticsMetaObject` interface describes the metadata which can be sent along with any usage analytics event.

### Hierarchy

- IChangeableAnalyticsMetaObject

### Indexable

[name: string]: string

A metadata key-value pair to send along with the usage analytics event.

Notes:

> - A metadata key must contain only alphanumeric characters and underscores (the Coveo Usage Analytics REST service automatically converts white spaces to underscores and uppercase characters to lowercase characters in key names).
> - A metadata value must be a simple string (no other type is allowed).