Timeline not reversing...

Ok, so I have a walk action event (which is composed of W, A, S, D) and I have this action event connected to a timeline that increases the player’s ‘max walk speed’ from 0 to 151 over the course of 1.33 seconds. That part works just fine. The player’s walk speed successfully increases gradually. Now I want the timeline to reverse when you release the walk action input. As you can see I have the ‘released’ node plugged into the ‘reverse’ node of the timeline. This does not work. When he stop the slowdown is blunt, and not gradual like it should be. If anybody has any ideas I would be greatly appreciative.