Can't play animation using blueprint

What’s happening? Are you sure aim_space_hip is the animation you want to play? What does the anim look like if you open it in the animation viewer?

i have a gun skeletal mesh and i have placed it in BP actor
i cant play the animation by pressing a key using blueprint node play animation
i have watched every tutorial for this simple thing but it just wont play the animation
i have switched the engine version to 4.21 but still no luck

thank you for your reply
i found the solution
the blueprint was an actor and i didn’t enabled input using enable input node