Avoiding duplicate spawns in random item placement

Thank you very much.
I followed your instructions and tried to set it up like the image example you shared.
However, the item (gimmick) is now only spawning in one place in the world, not at the TargetPoints I set. It keeps spawning repeatedly in the same single location.

I’m really sorry — even though you explained it so kindly and clearly, I still couldn’t get it to work properly.
Since I’m a beginner, it’s very difficult for me to figure out how to fix this issue in the Blueprint.

I would really appreciate it if someone could help me understand what might be wrong, or how to correct the Blueprint setup.