glass translucency for light

Hi
I try to use a frosted glass cylinder, surrounding a lightsource.
But the resulting shadow, on the wall acts like there is no light. It is just a flat shadow (left side of the attached Image).
Shouldn´t the shadow be lighter at the height of the lightsource?
Is there a checker I missed to check in the glass material, maybe?

Thanks in Advance for your help
Hilmar

It appears like shadow on the wall is casted by another light source, not the light inside the lamp. I think everything is correct.

oh man…
I am stupid!
Please, forget my post.
The Light and glass is working fine!
It´s not the lightsource IN the lamp, that is causing this shadow.
The shadow is comming from the envy.

Sorry for this

now it looks better

Yes Romullus,
sorry for that!!

No problem at all! :]