Light setting problems

[kty75]

I got some problem when setting the light.
I tried put a light on top of two boxes.
but duno why the light can go thru the upper box.
can anyone tell me why it's happen.
suppose the upper box would block the light right !?

[gabriel-mdini]

Hi...

go to property page of the light.Turn on "enable shadows"

Another way,if you don

[kty75]

Thz :>