I would like to know a method of creating a homing projectile system with target lock

I want a working video . i followed a video and things have changed so much in the latest engines that the older vids render error

https://forums.unrealengine.com/showthread.php?63694-TUTORIAL-BP-Homing-Missile-Blueprint-Tutorial-(for-beginners)

Did you try it in 4.12?

Yeah it worked in 4.12