# `GSFontMaster insertObject:inCustomParametersAtIndex:`

*Instance Method*

## Declaration

```swift
func insertObject(_ customParameter: GSCustomParameter, inCustomParametersAt idx: UInt)
```

```objc
- (void) insertObject:(GSCustomParameter *) customParameter inCustomParametersAtIndex:(NSUInteger) idx;
```

```python
insertObject_inCustomParametersAtIndex_(customParameter: GSCustomParameter, idx: int)
```