@sxweb Thanks for the additional info. Are you sure that
_spineAnimator is the same
SkeletonAnimation GameObject that
[SpineAnimation] public string _onDeadAnimation; populates its list with? By that I mean that it might be that the list is from another
SkeletonAnimation component, listing other animations, and then setting this animation at
_spineAnimator leads to a mismatch.
_spineAnimator for sure contains this named animation, could you please send us a minimal Unity project that still shows this issue? You can send as a zip file to firstname.lastname@example.org, briefly mentioning this forum thread URL so that we know the context.