How to switch from Idle to Run Right PROPERLY??

So... I already got the Idle animation and the Walk Right animation, but there's something wrong with the "Move" behavior. When i start the game, the actor seem to animate the "Idle" one properly but when I pressed the right key, the animation changes to ONLY the first frame of the "Walk Right" animation. I'm a beginner so.... i don't really know much how to fix that.

How many frames are in your walking animation? And can you post your code ?

Under the animation tab of your actor make sure it's on loop