## add(custom_prop) {#CustomProp}

Add the CustomProp object in the collection.

### Returns 





```python
def add(self, custom_prop):
    ...
```


| Parameter | Type | Description |
| :- | :- | :- |
| custom_prop | [CustomProp](/diagram/python-net/aspose.diagram/customprop) |  |



### See Also
* module [aspose.diagram](../../)
* class [CustomPropCollection](/diagram/python-net/aspose.diagram/custompropcollection)