Hey,
I didn’t know it was that technical, sounded so easy at first =)
Okay, I did a Class Blueprint (Character) and attached my Mesh and Animation BP in Class Blueprint as Components. So far no log errors!
In my Class Blueprint:
- I have the nodes I used in AnimBP’s Event Graph except for update animation and Delta Time, which caused problems. Which nodes should I replace them with?
- Surely it didn’t recognize the Set Rot Value variable, and I created one for it. But it doesn’t apply for anim BP’s Get Rot Value, right? I was looking for “Cast To” function to cast set to my Animation BP, yet no outputs are correct for RotValue.
In my Anim Blueprint:
- I have removed the shoulder joint rotation to simplify the workflow for now.
- When I change the Yaw value of Transfrom Bone, it started to rotate finally! But it gets a default -90 value of Pitch. I tried BMM Additive and World Space and it fixed the problem and character is looking as it should, just FYI if it might be a problem.
So far no camera-related joint rotation. But it is probably the Rot Value is not transferred even I used ClassBP in my scene with AnimBP attached to it. I am reading carefully what you said and checking out documentation at the same time, yet I can’t fix it. I am starting to lose my hope 
Again, thank you so much for your help, even if I can’t do it so far I learned much!