Loading particle .osg on-the-fly
 

I want to do a smoke particle system which progresses over time in its size. To do that I guess the best way would be to change the rateRange of the RandomRateCounter in the attached OSG over time... How can I do that in vizard?

My aim is to create a water kettle that starts to boil and release more and more gas.

You could try creating several OSG particle objects with different parameters and then make them visible over time to create the effect that the smoke is getting bigger.