This time around we still need this node to get and set values stored inside of BP_FirstPersonCharacter class.

The goal here is to create a 2-parts animation of reaching out the character's left hand when grappling, and the hand goes back to default when he/she comes out of the grappling state.

Therefore, the setup is: the image above shows how event 0 and 1 are triggered (first and second part of the grapple animation), and the below are what the events do: directly play the animation montage.

By definition of 2-parts animation, for example it means CHARGING UP THE WEAPON (as the first) and SLASH (as the second), to make sure that animation returns to default (or anything else that is concurrently running), need to set the ending animation (SLASH) to Enable Auto Blend Out (true).