one more thinking particles question

[Brian Jones]

The simple way-
animate the properties you want in the box that will be emitted, each box’s animation starts a soon as it is born as a particle. Easy and/but all particles behave the same which may or may not be what you want.

or

use the settings in the particle generating node (a PStorm node if you used the ‘TP Basic Emitter’ to start) to change size. Be warned though TP has a LOT of power which means there is almost always more than one way to get what you want and the only way to know what is possible is to have an understanding (at least basic) of all the TP nodes and the XPresso nodes. You can do stuff without knowing much about TP but you can do a lot more if you dig around and practice/play.