Custom Character Not Playing BlendSpace

Hello everyone! (:

Recently I imported a custom character and set up all of the pieces to make him work! (Following the tutorial here: Unreal Engine 4 Tutorial: Custom Character (english) - YouTube)

However, following compiling without issues, I played the game and the character played his idle animation yet would not play a walk or run animation, instead floating across the ground playing the same idle animation.

Any ideas? (: