How to: Simple Camera Zoom w/ Mouse Wheel

Development Programming & Scripting Blueprint
19

You need:
Location of mouse in world space. (MWSL)
Pawn location. (PAWN)
Spring Arm; Arm length (AL)
Spring Arm; Starting Arm length (SAL)

Set pawn location, when you set new spring arm arm length, to L= (((MWSL-PAWN)/SAL)*(SAL-AL))+PAWN