How to get different values?

I make a random obby script and i keep getting the same values and i don't know what to do....

here's my code:

	for i = 4,0,-1 do
		wait(1)
		local obbys = { workspace["Classroom 107"], workspace["Temple"], workspace["Skittle Speedway"]}
		local randomobby = obbys[math.random(#obbys)]
		local test = {workspace["Teleporters"].Door1.mapArea, workspace["Teleporters"].Door2.mapArea, workspace["Teleporters"].Door3.mapArea}
		local child = test[math.random(#test)]
		wait(1)
		child.Value = randomobby
	if i == 0 then
		break
	end
end