vray glass material environment problem

[3dSol]

Hello everyone, I've run into a problem where the panels i apply a glass material to, don't show the environment behind and they only show black

 

the panels I've assigned a normal vray material with 225 translucency show gray and the panels with EGZ vray glass show black, the environment is simply a white color no map and the panels have no shadow casting properties, the light comes in, but cannot see through

 

image attached

 

anyone help please?

 

thanks

 

3dS