Hi there,I need some XML advice for the crop duster I am working on.Firstly, I've created a gauge that calculates and displays the pressure in the spray system based on prop RPM and airspeed - is it possible to make the smoke system unavailable below a certain pressure?Secondly, is it possible to change the aircraft weight based on how long the smoke system has been activated? (to simulate the water load being sprayed out) If this is possible it would also be possible to set the aircraft weight based on a boolean L:variable. This would be used to simulate dumping the load.Any ideas are much appreciated.ThanksMarcel

OK, so no takers?My best attempt so far at making the smoke system unavailable is the following:(E:SPRAY PRESSURE,PSI) 15 < (>K:SPRAY_OFF)where (E:SPRAY PRESSURE,PSI) is calculated earlier in another section.This almost works, as it turns the smoke off all the time - not only when the condition is met.