Alembic import problem

Hi everybody,
I made an animation in blender, a mesh and a cloth, i made with cloth simulator of blender and all is ok, when I export I insert the number of the frames and save, when i import in UE the file, give me this error
“unable to compress animation data, no meshes found with vertex animation and bake matrix animation is turned off”

You have some ideas about this?

Thank’s