age/lifespan

[Saca]

Particles in tyFlow do not have a set lifespan, but you can arbitrarily delete them whenever you want. You can give them a lifespan if you want….for example, assign a max frame value to a custom float channel and delete them once their age surpasses that value, but there’s no default lifespan property.

thanks, 
i can get age/lifespan value by customFloat and C# script.
i will attouch sample scene .max file.

in the sample, the particles birth and the material changing red into blue by "agelife" custom float.

Ii have request if you can,"value-to-value" function.
Thinking-particels and houdini has such function. it brings value-to-value exchange with function-curve graph.