[mizutani_jun]

I try to use simple background from V-Realm Builder in vizard but when i add this file as background.wrl file nothing appear in vizard window.
I know vizard already have skydome.dlc file to load sky easily but for now i just want simple file from V-Realm Builder.
I previously use matlab so i just want to make same sample to use in vizard.
I just use simple command like below but nothing appears but also no error found.

import viz
viz.go()
background=viz.add('wrl_files/background.WRL')

I try same command but for skydome like below.I dont add jpg sky files so nothing appears but at least i can see the background but this didnt happen when i load simple background file from V-Realm Builder.

import viz
viz.go()
skydome=viz.add('skydome.dlc')

I also try to add light function but also nothing appears.The command is like below.

import viz
viz.go()
light=viz.add('wrl_files/light.WRL')

I also add my files in zip file below.

Am i missing something?
Really need helps.
Thanks.