## set_FieldId {#set_fieldid}

Sets corresponds to the project id of a custom field. Use string representation of a constant from Aspose::Tasks::ExtendedAttributeTask class to specify FieldId property.

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

```cpp
set_FieldId(const System::String & value)
```

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