# Animation group parameters incorrectly stored by Maxscript in 3ds Max

**URL:** <https://forum.babylonjs.com/t/animation-group-parameters-incorrectly-stored-by-maxscript-in-3ds-max/62687>\
**Category:** Bugs\
**Created:** [March 6, 2026, 10:58am UTC](https://forum.babylonjs.com/t/animation-group-parameters-incorrectly-stored-by-maxscript-in-3ds-max/62687 "2026-03-06T10:58:09Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![DavidM](https://avatars.discourse-cdn.com/v4/letter/d/71e660/32.png) [@DavidM](https://forum.babylonjs.com/u/DavidM)\
**Post date:** [March 6, 2026, 10:58am UTC](https://forum.babylonjs.com/t/animation-group-parameters-incorrectly-stored-by-maxscript-in-3ds-max/62687/1 "2026-03-06T10:58:09Z")

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Hiello.

With Maxscript in 3Ds Max, i can create an animation group, rename it, add nodes, but I can’t change the FrameStart and the FrameEnd parameters.

maxScriptManager = dotNetObject “Max2Babylon.MaxScriptManager”  
aniGroup=maxScriptManager.CreateAnimationGroup()  
maxScriptManager.RenameAnimationGroup aniGroup “TestAni”  
testAni=maxScriptManager.GetAnimationGroupByName “TestAni”

testAni.framestart = 10 → this property exists but the value is not crorrectly stored by maxscript, it remains at 0 when i open the animation group window and also at the export ?

Any idea ?  
 Moreover, do you know where i can find all the properties/attributes of the dotNetObject “Max2Babylon.MaxScriptManager” ?(as “CreateAnimationGroup”, “RenameAnimationGroup”, etc.)

Thanks you.

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**Author:** ![sebavan](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/sebavan/32/57_2.png) [@sebavan](https://forum.babylonjs.com/u/sebavan)\
**Post date:** [March 6, 2026, 5:12pm UTC](https://forum.babylonjs.com/t/animation-group-parameters-incorrectly-stored-by-maxscript-in-3ds-max/62687/2 "2026-03-06T17:12:49Z")

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cc @srzerbetto and @PatrickRyan

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**Author:** ![PatrickRyan](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/patrickryan/32/3417_2.png) [@PatrickRyan](https://forum.babylonjs.com/u/PatrickRyan)\
**Post date:** [March 9, 2026, 3:35pm UTC](https://forum.babylonjs.com/t/animation-group-parameters-incorrectly-stored-by-maxscript-in-3ds-max/62687/3 "2026-03-09T15:35:09Z")

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@DavidM, let us dig into this a little bit and see what we can uncover.

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**Author:** ![DavidM](https://avatars.discourse-cdn.com/v4/letter/d/71e660/32.png) [@DavidM](https://forum.babylonjs.com/u/DavidM)\
**Post date:** [March 16, 2026, 1:12pm UTC](https://forum.babylonjs.com/t/animation-group-parameters-incorrectly-stored-by-maxscript-in-3ds-max/62687/4 "2026-03-16T13:12:31Z")

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Hello @PatrickRyan Do you have a little time to dig into this with me ? This little thing jeopardizes all the development I was planning. Thank you for your help.

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**Author:** ![PatrickRyan](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/patrickryan/32/3417_2.png) [@PatrickRyan](https://forum.babylonjs.com/u/PatrickRyan)\
**Post date:** [March 16, 2026, 10:15pm UTC](https://forum.babylonjs.com/t/animation-group-parameters-incorrectly-stored-by-maxscript-in-3ds-max/62687/5 "2026-03-16T22:15:45Z")

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@DavidM, yes, we will be able to take a look at this. Please bear with us just a bit, we have been rallying in the past week on closing out all of the things needed for the new Babylon release. But I should be able to put some time into it tomorrow.

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**Author:** ![DavidM](https://avatars.discourse-cdn.com/v4/letter/d/71e660/32.png) [@DavidM](https://forum.babylonjs.com/u/DavidM)\
**Post date:** [March 17, 2026, 10:16am UTC](https://forum.babylonjs.com/t/animation-group-parameters-incorrectly-stored-by-maxscript-in-3ds-max/62687/6 "2026-03-17T10:16:50Z")

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@PatrickRyan  
Great, thank you so much ! Good luck with the final touches !  
I can’t wait to discover the new release 🙂