## idx_set {#idx_set}

Sets the element at the specified index.

**Returns:** void Aspose::Tasks::

```cpp
idx_set(const RateType & key, System::SharedPtr< RateByDateCollection > value)
```

| Parameter | Description |
| --- | --- |
| key | The zero-based index of the element to get or set. |
| value | the element at the specified index. |