Allows integer-indexed access to items in the collection.
| Name | Type | Description |
| Index | Long | Input Variant value that specifies the OnFaceCurve to return. This can be either a numeric value indicating the index of the item in the collection or it can be a string indicating the OnFaceCurve name. If an out of range index or a name of a non-existent OnFaceCurve is provided, an error occurs. |