# `GSCustomParameter propertyListValueFormat:error:`

*Instance Method*

## Declaration

```swift
func propertyListValue(format formatVersion: GSFormatVersion) throws -> Any
```

```objc
- (id) propertyListValueFormat:(GSFormatVersion) formatVersion error:(NSError **) error;
```

```python
propertyListValueFormat_error_(formatVersion: GSFormatVersion) -> tuple[object, NSError]
```