WTF Is? Is Listening for Input Action in Unreal Engine 4 ( UE4 )

I wonder how hard it would be to use "Is Listening" to create a double jump.

If you get a chance can you make a video on, aw its hard to explain.. I am a visual person so here it goes.. (UE4 Environment FP) you walk up to a vending machine and click the button using your cross hair (instead of projectiles the cross hair interacts with objects) and the button on the vending machine actually depresses like it was touched/clicked. Then instead of a refreshing soda coming out another object on the map blows up. You can use simple grey static meshes, no need to go all out on the visuals. Thanks, Arrowlyn