## set_CustomAttachmentStorageData {#set_customattachmentstoragedata}

Sets the custom attachment storage data.Can be null.

**Returns:** void Aspose::Email::Mapi::Msg::

```cpp
set_CustomAttachmentStorageData(System::SharedPtr < CustomAttachmentStorage > value)
```

| Parameter | Description |
| --- | --- |
| value |  |