# Expiration_ts

> The expiry of the entitlement group, in milliseconds since the Unix epoch.

## Definition

* **Type:** Property
* **Namespace:** [UnityEditor.Licensing](/engine/7000.0/script-reference/unityeditor/licensing.md)
* **Assembly:** UnityEditor.CoreModule

```csharp
public string Expiration_ts { get; }
```

### Remarks

An empty string or `"0"` means the entitlement group does not expire. To read this value as a date, use [EntitlementGroupInfo.TryGetExpirationUtc](/engine/7000.0/script-reference/unityeditor/licensing/entitlementgroupinfo/trygetexpirationutc.md) instead of parsing the string.