bmw 323 window rollup/total closure

Hi Guys - I'm trying to add the factory fit window rollup (total closure) feature to my alarm (If I lock the car with my key and keep it held to 11 o'clock the windows will rollup if they're open) I've already got the "double lock" feature wired in so I just need to know if it's a case of extending the lock pulse to about 15 seconds - I have a 528t but I can't seem to get it to put out a positive signal that I could wire to the lock pulse (I've tried cutting the blue loop) Any ideas???

Yes if you've gone to the lock unlock wires in quad plug at module behind glove box, should be blue/red and white black neg, extend lock pulse, doesn't need double lock unlock in Europe.