animation in blender to unity

well, i am able to move my character now forward,bacward and sidewards but my problem is I am not able to call the animation that ive created in blender. I have used the tutorials but there is an error in unity that says "the animation state walk_cycle could not be played because it couldnt be found! please attacg the animation clip . . ." something like that. I dont know what to do to this problem. when i export my animated character, it just have a "default take" in it... can you give me some hint on how to do this properly ? thanks