How can I input a UTextture2D into UPaperSprite

I load a image from disk to a UTextture2D,then I put this image to a UpaperSprite. But, I cant see anything in Editor.
like this

the image loader program copy from A new, community-hosted Unreal Engine Wiki - Announcements and Releases - Unreal Engine Forums

this is my blueprint

the function SetShipSpriteComponentByUs code is

I dont know how to fix this bug