Transform (Modify) Bone

Hello guys
please I need help fast
I think I did everything correct but I always get this warning

I want to rotate a bone in game

Your bone name seems to have quotes around its name, I’ve never seen that before, is this a custom skeleton?

no it is fps character from starter pack

Pleaseeeeee…
someone help

It still seems like your bone is incorrect somehow, it’s referencing a bone that the blueprint can’t ‘see’. Have you tried other bones? is it the same for each bone? Did you copy the skeleton, how is it referenced in the anim blueprint?