Adds a type to the selection preferences.
| Name | Type | Description |
| Type | ObjectTypeEnum | Input ObjectTypeEnum to add an object type item to the collection . |
| Index | Variant | Optional input an index that specifies the location the item to be added. If not specified the item will be added at the end. If the input index is larger than the count of items the new item will be added at the end. This is an optional argument whose default value is null. |