GivePlayerDamage help and some explanation please!

[Dominic0904]

Ok thanks, that helped. But when do I know when to write them? Say when do I know when to write this next to the function;
(float afAmount, string& asType, bool abSpinHead, bool abLethal)"
Over;
(string &in item)
Or;
(string &in asParent, string &in asChild, int alState)



That's the only thing that is really confusing me.