LevelSequence / MovieSceneSkeletalAnimationSection does not modify on Runtime

Good morning. Nice to meet you.
I want to run different animations on a few Skeletal MeshActor now in Level Sequence.
This is not a problem with the same, but the problem is that changes in the Param.Animation of the corresponding MovieSceneSkeletalAnimation are not applied at runtime.
MovieSceneSkeletalAnimationSection->Modify in the editor works well, but when it is actually packaged and executed, the default animation set in LevelSequence works.

Is there a way to solve it?