If I want to wiggle the X, Y and Z dimensions of a layer's position, I can do it with this expression:
[wiggle(3,4)[0],wiggle(4,5)[1],wiggle(5,6)[2]]
This addresses each dimension as an array member by index number.
But if I want to randomize the dimensions, I have to use syntax like this:
[random(0,100),random(10,50),random(50,80)]
If I try to explicitly reference the array members when using the Random function, AE throws an error.
So how do I know which functions require addressing array members by index number and which functions require that I don't?