How to move those arrows?

I watched this video which is how to move arrows

I checked all blueprint again

But it doesn’t work. just arrows stay there.

How to solve it?

I am not sure if you are building this gizmo to be used in runtime, but in that case, in the capture you uploaded you are actually testing that in the editor. Is this issue happening when you press play in editor?

Also, it would be good if you could share the code you are using

Cheers,
David

Yes, I would move them when I press play in editor
Those pic are blueprint of that actor