Returns the specified FeatureDimension object from the collection.
| Name | Type | Description |
| Index | Variant | Input Variant value that specifies the FeatureDimension 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 name of the parameter associated with the dimension. If an out of range index or a name of a non-existent FeatureDimension is provided, an error will occur. |