Scroll Down to the 2nd Part
- Right click on an empty space in the Event Graph, type in “*” (Multiply) on the menu that pops up and hit enter to place the multiplication node
- Right click on it’s output pin (the pin on the right side of the node) and select the To Vector option under the Pin Conversions section
- Right click on the A pin (the input pin on the top left side of the node) and select the Split Struct Pin option under the Pin Actions section
- Right click on the B pin (the input pin on the bottom left side of the node) and select the To Float (single-precision) option
Here’s what the node should look like at each step:
Hold on, I didn’t notice your second post! I thought you were asking about the multiplication node. Yeah UE4 doesn’t have Enhanced Input Actions, you’d use axis mappings there.
Okay just set it up for axis mappings as well, here:
(In Project Settings > Inputs) 
Hope this helps 