hard time trying to import a multi-LOD mesh

Hello, i really don’t know what is going wrong out there. i’ve read offcial tuts, watched a couple of videos, and no way i can import my multi LOD mesh. i’m on Blender. i set up the custom properties according to a video. but the result is the same LOD 0 shows a poo

here’s what i should get

here’s what i got

seems a mix of all lods mixed up

and this is what i did