Sbuilderx Can't make bgl.

Hi everyone..

I need to help about sbuilderx bgl comp.

I want to change default land textures to water textures.I am using sbuilderx default hydro poly.

After this ,I do Select/All Polygons and going to make bgl button..But not selectable any box in bgl comp window. I guess I cant select any polygons :S

I am trying again, select/all polygons, make bgl but same..

Any idea?