How do you turn on Stencil Shadow?

Hi I'm a begineer and am just wondfering how to turn on Stencil shadow . According to the G7 manual it's:

var shadow_stencil = on;

But when i do that i get an error "on is an undeclared identifier"...

Somebody Help me plz!

Okey I think I've figured out how to turn it on. ( just shadow_stencil = 2 or 1 works). The frame rate is a lot slower so I assume it's on stencil.

But, the shadow is not dynamic... shadow angle are not affected by any (dynamic)light source I placed on WED it only seems to change angle depending on the sun's angle... Also I can't get it to cast on walls...no matter how I placed the lights.... the shadow just caste downwards...(isn't that z-buffer shadow)?

Someone please help?

btw I'm using the trial version of the newest A7 from the download area..
(it says in the version page there's dynamic shadow but no static shadow?? )