Bad argument to 'random' - lua

Question

This is my code
while true do
script.Parent.Position = Vector3.new((math.random(-41.994,15.471)),0.5,(math.random(129.514,69.442)))
script.Parent.Color = Color3.new(math.random(0,255), math.random(0,255), math.random(0,255))
wait(1)
end
The programming language I am using is Lua
When I try to use this code I am presented with this error:
"15:50:47.926 - Workspace.rock outer walls.Model.Rocks.Part0.Script:2: bad argument #2 to 'random' (interval is empty)"
The purpose of the code is to randomly teleport the part the script is in around but not to far away and at the same y axis.
Can somebody please give me some form of explanation
Ps. A while ago I made a rude post on this website because I was confused at how to do a lot of things and now I understand some stuff better so I would like to apologize for my idiocy ~Zeeen

Answer 1

In Lua, math.random can be called 3 ways:
with no arguments
with 1 integer argument
with 2 integer arguments
It does not accept values like -41.994 or 15.471 this is why you're getting the error.
If your change your values to -41 or 15 you shouldn't see an error any more.
Lua 5.3 reference manual: http://www.lua.org/manual/5.3/manual.html#pdf-math.random
math.random ([m [, n]])
When called without arguments, returns a pseudo-random float with uniform distribution in the range [0,1). When called with two integers m and n, math.random returns a pseudo-random integer with uniform distribution in the range [m, n]. (The value n-m cannot be negative and must fit in a Lua integer.) The call math.random(n) is equivalent to math.random(1,n).
This function is an interface to the underling pseudo-random generator function provided by C.

Answer 2

As Nifim's answer correctly points out, there are three ways to call math.random in Lua.
With no arguments, it returns a real number in the range 0.0 to 1.0.
With one or two integer arguments, it returns an integer.
None of these directly give you want you want, which I presume is a random real number in a specified range.
To do that, you'll need to call math.random with no arguments and then adjust the result.
For example, if you wanted a random number between 5.0 and 10.0, you could use
math.random() * 5.0 + 5.0
Consider writing your own wrapper function that takes two floating-point arguments and calls math.random.
function random_real(x, y)
return x + math.random() * (y-x)
end