Hi there im plannin to make some kind of simulation in particles and make it as an asset.
I have two main doubts
1) I would be needing a parameter in an asset say suppose if the user wants to emit the particle at specified frame
for eg:
$F > 30 in the constant activation will set the particles to start from the 30 th frame.Can it be made dynamic through a dynamic variable or something?

2)I also set the particle to point at a source and i also set that source to look at an object which has an affect on the simulation effect.I also want this to change which can be done through CHOPS i think.But all the things should occur dynamically and procedurally

Can u help me
I have attached the file here by

Many thanks