Well, it works. For all the others having the same problem:
Before exporting:
-Open each mesh in Edit mode, select every vertices [“A”] and “recalculate normals outside” [ctrl+n] to avoid problems with meshes and lights in the app.
-Select armature and mesh in Object mode and “scale and Rotation to ObData” [ctrl+a] to avoid issues with the orientation and dimensions of the models.
r.
Try the “Create Physics Collision Shape” button in the SceneComposer of jMP.
-Right click on the "scene.j3o" -> edit in sceneComposer
-Left click on sceneComposer Window
but I can't find the "create physics collision spahe button". Where is it?
thanks!
r.