built in functions just not working?

I've noticed this for a while now but some functions just don't work sometimes? For some reason I keep getting the error 'Warning: random.next() is not a function'..

meth = object end

meth.random = function(minimum, maximum)
  local rand = random.next() // error here
  return rand * (maximum-minimum) + minimum
end 

meth.randomInteger = function(minimum, maximum)
  local rand = random.next() // and error here
  return floor(rand * (maximum-minimum) + minimum)
end

You should have something like an object initialization function mathInit()

mathInit = function()
meth = object end

meth.random = function(minimum, maximum)
  local rand = random.next() // error here
  return rand * (maximum-minimum) + minimum
end 

meth.randomInteger = function(minimum, maximum)
  local rand = random.next() // and error here
  return floor(rand * (maximum-minimum) + minimum)
end
end

or place this code in the init() section.

init = function()
mathInit()
end

still doesnt't seem to work..

here's the project in its entirety: https://microstudio.dev/i/gurg0/shapeez/

I just nested the functions in the object instead of on the outside which fixed it?

I really don't know why but at least I solved it cause that was bugging me.