how to set the position of a block using cframe when cloning using math.random?

I keep trying to set the position of a block when it is clones but it keeps giving me this error.

Workspace.PaintBall.Action1:13: invalid argument #2 to 'random' (interval is empty)

script:

local clonesneeded = 50 --how many clones are needed of each type

local function ends()
	game.Workspace.PaintBall.Action1.Disabled = true
end

while script.Disabled == false do
	while clonesneeded >= 1 do
		local v1clones = script.ClonesV1:Clone()
		v1clones.Parent = game.Workspace.PaintBall
		v1clones.Name = "clonesV1"
		v1clones.Transparency = 0
		v1clones.Position = Vector3.new(math.random(-70.875, -605.875), 5.473, math.random(-310.375, 260.125)) -- this line has the error
		
		local v2clones = script.ClonesV2:Clone()
		v2clones.Parent = game.Workspace.PaintBall
		v2clones.Name = "clonesV2"
		v2clones.Transparency = 0
		v2clones.Position = Vector3.new(math.random(-70.875, -605.875), 5.473, math.random(-310.375, 260.125))
		
		clonesneeded = clonesneeded - 1
		
	end
end