[Threshold]

What are you asking? It isn't possible. Are you asking how to get the coordinates of a thrown projectile? Again, you can't accurately. You can do it by scripting your own system, but seeing as players can hold the mouse button to throw it further, there's no real way to do this.

One possible option is detect when the player holds and then releases the fire button. Then there's the annoyance of distance per duration held etc...