If i did't open animation sequence , i can't use it

Development Character & Animation
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1

i load animation sequence(save in datatable) in c++, and i play slot animation,but anim did’t exit , if i open the animation sequence in content brower, then animation can be find.

UPROPERTY(EditAnywhere, BlueprintReadOnly, Category = “SkillTable”)
TSoftObjectPtr Skill_Location;
it’s data type in c++

why ??? how to fix it ?