Hello guys,
sorry to dig up this old thread, but here is an explanation of the previous post from Ulrich.Thümmler.
Basically, what it does is changing the FOV of your current camera, in order to make a sort of zoom. You place the nodes in your PlayerBP (for exemple, in the third carracter starter, the good BP is ‘ThirdPersonCharacter’.)
I got it working for a Third/First Person Gamestyle.
Here is how my nodes setup looks like :
