> This page is for version 4.3.
> For other versions, use one of these documentation indexes:
> - 4.6 (Latest) (default): https://docs.nvidia.com/holoscan/sdk-user-guide/4-6-latest/llms.txt
> - ltsb-2.0: https://docs.nvidia.com/holoscan/sdk-user-guide/ltsb-2-0/llms.txt
> - 4.5: https://docs.nvidia.com/holoscan/sdk-user-guide/4-5/llms.txt
> - 4.4: https://docs.nvidia.com/holoscan/sdk-user-guide/4-4/llms.txt
> - 4.3: https://docs.nvidia.com/holoscan/sdk-user-guide/4-3/llms.txt
> - Archives: https://docs.nvidia.com/holoscan/sdk-user-guide/archives/llms.txt

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# holoscan::ParameterFlag

> Enum class to define the type of a parameter.

Enum class to define the type of a parameter.

```cpp showLineNumbers={false}
enum class holoscan::ParameterFlag
```

The parameter flag can be used to control the behavior of the parameter.

---

## Values

### kNone

The parameter is mandatory and static. It cannot be changed at runtime.

### kOptional

The parameter is optional and might not be available at runtime.

Use `Parameter::try_get()` to get the value.

### kDynamic

The parameter is dynamic and might change at runtime.