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 # Property Properties

 Last update: 19.06.2026 

Namespace: [Phoenix.PaczAPI](Phoenix.PaczAPI.md)  
Assembly: Phoenix.PaczAPI.dll

## Properties

An arbitrary dictionary of values that allows a plug-in writer to store data about the instance without needing to create additional files in the Pacz. Some values have special meaning as defined in `Phoenix.PaczAPI.CommonProperties`. The system will ensure this is never null.

```csharp
[JsonProperty("properties", NullValueHandling = NullValueHandling.Ignore)]
IDictionary<string, object> Properties { get; set; }


```

### Property Value

[IDictionary](https://learn.microsoft.com/dotnet/api/system.collections.generic.idictionary-2)&lt;[string](https://learn.microsoft.com/dotnet/api/system.string), [object](https://learn.microsoft.com/dotnet/api/system.object)&gt;