How to combine two procedurally animated bones?

Hi

I’m trying to use an animation blueprint to set the rotation of two bones individually on a skeletal mesh. Hopefully you can see what I’m trying to do from this screenshot of the block out mesh here:

Essentially I want the “neck” bone to rotate up to 35 degrees (for example) and the head bone to only rotate up to 15 degrees. Rotating the bones works as expected individually but I can’t seem to successfully combine them. Here’s my blueprint.

Any help would be greatly appreciated.

Thanks,
D~

Hey guys.

I’m still keen to resolve this. I’m quite new to animation so I’m sure there is just a simple misunderstanding somewhere.

Cheers,
D~