Hi,
I am having an issue with mouse controlled camera movement, rather than try to explain it in text here is a video explaining the problem: Help with mouse movment - YouTube
Hi
Add controller roll/pitch/yaw are used for pawns. You need the node add Actor World Rotation.
Check the image there you can see the setup. (both nodes are the same I just split the rotation structure on the upper one).
If your mouse is inverted multiply by -1 or change it to -1 in the input settings.
Not sure if the Level BP is the right position for your logic but it can depend on your game.
Thanks so much for the help!
Your awesome! 
how do you get the cameraactor?
Cant find it 
when you right click (in the level BP) you should see the selected level actor at the top.
Drag and drop should also work