I'm doing a specific type of bifrost liquid simulation. I want the behavior of the fluid to be controlled based on the age value of the particles of the simulation. I want to control attributes such as viscosity based on the age of the each particle. I would want to know how I can have programmatic access to age parameter to control these values with a script. I did a research on this topic last two days and could not find any material explaining how to do something like this. Thank you!