Problems with environment effects module

[roguetrooper 2]

I'd like to implement a sandstorm as to be seen in the first PMC mission.

I've consulted http://community.bistudio.com/wiki/Environment_-_Effects and made these settings:

* set date to June, noon, 0.1 overcast, 0.1 fog

* placed a environment effects module with in its init line

this setvariable ["particleEffects",[1]]; this setvariable ["intensity",1.0];

But there are no dust/storm effects to be seen. Setting weather, time and module-code for snowfall effects works fine. But a sandstorm refuses to appear.

What do you have to do to create such a sandstorm?

[zigzag 0]

http://community.bistudio.com/wiki/BIS_fnc_sandstorm

Remember to put a function module in the mission.

[roguetrooper 2]

Thanks!