Bone transformation using player controller variable

I would like to transform my character’s left and right upperarm bone, so that they rotate in relation to a rotation variable that I’ve defined in my player controller graph. My 2.5D character is basically meant to point its arms towards the mouse cursor.

This is my player controller BP :

As you can see I’ve promoted a public struct of type Rotator called ArmsRotation.

Now onto my AnimGraph :

So, as you see I get an error when I compile it. What should be the target of my ArmsRotation? Am I doing this the right way?

It’s ok I fixed it. I was stuck with a pretty basic thing. Sorry for being such a noob :frowning:

Show the solution? I have the same problem :(.