Hi there,

I have this simply excpression but i can't figure what's wrong:

Runtime Expression Before Dynamics mapped on radiusPP of my ParticleShape2 (blobby Surface)
here's :

float $raggio=.05;
if($raggio<.2)
{

$raggio=.05+(time/20);
particleShape2.radiusPP=$raggio;
}

i want my blobbies start from .05 size and grow up 'til .2 but in some case blobbies grow time after time without stopping in other case they won't grow. What's wrong? What's the correct implementation?
thnx