Problem on exporting mesh with animations

Hello, i know this problem is really frequent but i’m a begginer with Blender and UE4, so i explain i make a furniture on blender i export this mesh with fbx on ue4 and it’s work, but when i add an animation on this furniture on blender and export him with fbx (with some option ) this is not working. I can see on UE4 sometimes the door of my furniture or the furniture without the door but not both .

I think this is a problem in the exportation

when i selected the armature this is not working (in ue4 i see not a single thing) so i uncheck “selected only” …

Any idea ? I can show you my setting and fbx .

Thanks you.