Legacy Documentation: Version 4.6(go to latest)
Language: English
  • C#
  • JS
  • Boo

Script language

Select your preferred scripting language. All code snippets will be displayed in this language.


Suggest a change


Thank you for helping us improve the quality of Unity Documentation. Although we cannot accept all submissions, we do read each suggested change from our users and will make updates where applicable.


Sumbission failed

For some reason your suggested change could not be submitted. Please try again in a few minutes. And thank you for taking the time to help us improve the quality of Unity Documentation.



public static var activeInstanceID: int;
public static int activeInstanceID;
public static activeInstanceID as int


Returns the instanceID of the actual object selection. Includes prefabs, non-modifyable objects.

When working with objects that are primarily in a scene, it is strongly recommended to use Selection.activeTransform instead.