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[FlawlessHappiness]

It does

Those parameters specify what kind of function you want to use, and if you have them wrong, no function will be called.

(string &in asEntity) = Interaction function
(string &in asParent, string &in asChild, int alState) = Collide function

For more information check this: http://www.frictionalgames.com/forum/thread-18368.html