How to release abandoned staticmesh or texture in blueprint

Development Programming & Scripting Blueprint
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1

(UE4-27)
I use AssetRegisty and GetAssetsByPath node to get my staticmesh set. Then random a staticmesh to set to my actor like below.

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image872×597 107 KB

But the replaced mesh still occupies memory and is not been gc!!
How can I release abandoned staticmesh or texture in blueprint?Destroy actor doesn’t work for me. Actor can be destroyed but its staticmesh is still in memory.

2

Solved! It dosen’t release because mesh or textures has standalone flag in Editor. Package my game can solve it.