I'm trying to set up a partcile system for a puffy dandelion being blown in the wind. Mostly I've got it working except all of the particles fly off simultaneously. What I'd like to do is have them fly off one by one. I tried to write an expression to that effect, but I can't figure out the command to say "make this particle dynamic". Instead it makes all of them dynamic at once.

This is what I've got.

if (particleShape2.particleId <= (frame/2))
{
particleShape2.dynamicsWeight = 0;
}
else
{
particleShape2.dynamicsWeight = 1;
}

I also tried making a new expression ("dynPP"), but I couldn't figure out how to assign it to individual particles.

Any thoughts?