How do you create level stream LODs without simplygon?

How do you create level stream LODs without simplygon?

I tried creating another version of the map with _LOD# at the end and kept the original map the original name…

I also tried deleting the original version… and instead just naming the original name_LOD1 and the next low def version name_LOD2

Problem is the first method shows the original map in my world composition, but details for the level only allow me to create an lod with simplygon. Does not detect the _LOD version…

The 2nd method no _LOD# versions are detected so the map doesnt exist to world compoisition…

What am i doing wrong?