I've set up a very simple plugin for Unreal Engine 4 for creating console commands in Blueprint.
This allows you to very quickly create console commands for your game in Blueprint. I often need to expose functionality for experimenting/iterating on a feature, so this is a quick way of allowing in-game tweaking without having to write new CPP code every time I want to change one thing at runtime.
Tldr; use this plugin and you can create a console command like "test" by simply making a function on any Blueprint called "CmdTest". Magic!