Creating Particle Systems

[Rapture]

As a basic rule of thumb when your trying to troubleshoot something, put in a

void AddDebugMessage(string& asString, bool abCheckForDuplicates);


To check if your script is being executed at all... In this case it would be good since theirs only one thing going on.
//*******************************************
But to fix your problem... Your parameters are backwards...

void PS_System(string &in asChild, string &in asParent, int alState)

should be...

void PS_System(string &in asParent, string &in asChild, int alState)