Fill up a Silo with granins

[Tarukido]

Hi, I am new to tyflow, do you guys know if it's possible to fill up a Silo with small grains ? 
I know it might be a dumb question, but i can't find an answer on the web/Yt.
I can make them drop and scatter on a surface, what i don't know how to do is for them to stack up and grow to fill the Silo.

[d4rk3lf]

Because Tyflow is so awesome, It's faster for me to just do a sample scene, then to explain here. 
So, here it is.

[Tarukido]

Because Tyflow is so awesome, It's faster for me to just do a sample scene, then to explain here. 
So, here it is.

d4rk3lf you are awesome, thank you so much, please send me your paypal to give you a few coffees, I will not take no for an answer.