# RequestBase.SetArgument(int, object)

[Type overview](/orleans/docs/api/csharp/microsoft.orleans.core.abstractions/orleans.runtime.requestbase/) | [Methods](/orleans/docs/api/csharp/microsoft.orleans.core.abstractions/orleans.runtime.requestbase/methods/)

[Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.Core.Abstractions/Runtime/GrainReference.cs#L574)

```csharp
public virtual void SetArgument(int index, object value)
```

Sets the argument at the specified index.

### Parameters

- `index` (`int`): The argument index.
- `value` (`object`): The argument value