SOO, heres the deal.
i have an astronaut that i created on blender in a bunch of parts, the Fps controller works perfectly with the naut.
i created a walking forwards animation for him, and i finally got it to animate when i pressed W and he walks.
However! 
i only want the animation to play when he is walking(when i press W)
and to stop the animation when i lift off the key
im getting better “i guess” at Javascript and would like help
what do i do? PLease help!
my astronaut wants to be a real boy!
Best way would be to have an empty animation you switch to when you let go of W by using a trigger.
This could also be a idle/standing animation.
Good luck 
You can always use get key up!