numpad.Register
Description
Registers a numpad library action for use with numpad.OnDown and numpad.OnUp
Arguments
2 function func
The function to be executed.
Arguments are:
Player ply - The player who pressed the button
vararg ... - The 4th and all subsequent arguments passed from numpad.OnDown and/or numpad.OnUp
Returning false in this function will remove the listener which triggered this function (example: return false if one of your varargs is an entity which is no longer valid)