How to get my character to aim in the sidescroller template?

Hey guys,

So i’m really new to Unreal andtrying to get my character to aim his gun up and down. However, most tutorials i find show how to do it in a top down shooter and i can’t get it to work. I want him to aim towards the mouse location.

I used this tutorial but it isn’t working and i can’t figure out how to get in the X vector nodes.