Random Vector?

Can you show me how to make a random Vector that can be limited. eg

{200, 200, 200} to {-200, -200, -200}

?

[lua]local MyVector = Vector( math.random(-200,200), math.random(-200,200), math.random(-200,200) )[/lua]
:eng101:

Thanks

Or you could just do
[LUA]local vec = VectorRand() *200[/LUA]