Invalid argument #2 to 'random' (interval is empty) line 25

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#1 
local Model = script.Parent

local SelectedPos1

local SelectedPos2

repeat wait() until #Model:GetChildren() == 3

while wait() do
	
	for _, PlatForm in pairs(Model:GetChildren()) do

		if PlatForm:IsA("BasePart") then

			if PlatForm.Name == "PlatForm1" then

				SelectedPos1 = Vector3.new(math.random(-7,7), PlatForm.Position.Y, math.random(-595,-634))
				
				wait(10)

				PlatForm.BodyPosition.Position = SelectedPos1
				
			else
				
				SelectedPos2 = Vector3.new(math.random(-7,7), PlatForm.Position.Y, math.random(-660,-699))

				PlatForm.BodyPosition.Position = SelectedPos2

			end

		end

	end
	
	repeat
		
		wait(1)
		
	until Model.PlatForm1.Position == SelectedPos1
	
	repeat

		wait(1)

	until Model.PlatForm2.Position == SelectedPos2
	
end
#2

The reason it’s doing that is because your maximum is lower than your minimum. And it’s because of your negative math.randoms, aka

math.random(-595,-634)

And

math.random(-660,-699)

Negatives further away from 0 are less than negatives closer to 0, flip them around and you should be good

#3

Ok that works but the platform falls

#4

Think it may be something wrong with the configuration you have with the BodyPosition, I would recommend doing some research on it as I’m not experienced with them yet

#5

Ok and last question, how to make player not fall from it