# gizmoManager.boundingBoxDragBehavior.onDragEndObservable not working properly

**URL:** <https://forum.babylonjs.com/t/gizmomanager-boundingboxdragbehavior-ondragendobservable-not-working-properly/38383>\
**Category:** Bugs\
**Created:** [February 20, 2023, 1:06pm UTC](https://forum.babylonjs.com/t/gizmomanager-boundingboxdragbehavior-ondragendobservable-not-working-properly/38383 "2023-02-20T13:06:25Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![mathus1](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/mathus1/32/8535_2.png) [@mathus1](https://forum.babylonjs.com/u/mathus1)\
**Post date:** [February 20, 2023, 1:06pm UTC](https://forum.babylonjs.com/t/gizmomanager-boundingboxdragbehavior-ondragendobservable-not-working-properly/38383/1 "2023-02-20T13:06:25Z")

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When I drag one sphere, it works. And then I drag another sphere, the event is not triggered

Check this : [Babylon.js Playground](https://playground.babylonjs.com/#E3SP1C)

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<div class="post-metadata">

**Author:** ![RaananW](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/raananw/32/28955_2.png) [@RaananW](https://forum.babylonjs.com/u/RaananW)\
**Post date:** [February 20, 2023, 2:17pm UTC](https://forum.babylonjs.com/t/gizmomanager-boundingboxdragbehavior-ondragendobservable-not-working-properly/38383/2 "2023-02-20T14:17:27Z")

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When using gizmos on multiple meshes the manager is attached and detached from the meshes, which results in clearing the observers from the observables. This should work:

[test | Babylon.js Playground (babylonjs.com)](https://playground.babylonjs.com/#E3SP1C#1)