Theme Builder

First i want to apologize my awful english.

Second i need a help to put a image background using the "layout editor".

i tried every way I found, but the selected image wont appear.

I upload the image to the "resource" of confluence, and them i choose it in layout editor:

>style>image=>resource

Theme builder mark the file, but it wont appear theme builder selects (header, menu, content, side bar, etc.)

Could anyone help me out?

Tnx a lot.

Background image