How to make math.Random Constanly pick a number?

I made this script to use the math.random but I cant get it to pick another number afterwards

local un = math.random(1,32)
if un == 1 then
	game.ServerScriptService.HyugaDNA.Disabled = false
	wait(40)
	game.ServerScriptService.HyugaDNA.Disabled = true
end
if un == 2 then
	game.ServerScriptService.HyugaDNA.Disabled = false
	wait(40)
	game.ServerScriptService.HyugaDNA.Disabled = true
end
if un == 3 then
	game.ServerScriptService.HyugaDNA.Disabled = false
	wait(40)
	game.ServerScriptService.HyugaDNA.Disabled = true
end
if un == 4 then
	game.ServerScriptService.HyugaDNA.Disabled = false
	wait(40)
	game.ServerScriptService.HyugaDNA.Disabled = true
end
if un == 5 then
	game.ServerScriptService.HyugaDNA.Disabled = false
	wait(40)
	game.ServerScriptService.HyugaDNA.Disabled = true
end
if un == 6 then
	game.ServerScriptService.HyugaDNA.Disabled = false
	wait(40)
	game.ServerScriptService.HyugaDNA.Disabled = true
end
if un == 7 then
	game.ServerScriptService.HyugaDNA.Disabled = false
	wait(40)
	game.ServerScriptService.HyugaDNA.Disabled = true
end
if un == 8 then
	game.ServerScriptService.HyugaDNA.Disabled = false
	wait(40)
	game.ServerScriptService.HyugaDNA.Disabled = true
end
if un == 9 then
	game.ServerScriptService.HyugaDNA.Disabled = false
	wait(40)
	game.ServerScriptService.HyugaDNA.Disabled = true
end
if un == 10 then
	game.ServerScriptService.HyugaDNA.Disabled = false
	wait(40)
	game.ServerScriptService.HyugaDNA.Disabled = true
end
if un == 11 then
	game.ServerScriptService.HozukiDNA.Disabled = false
	wait(40)
	game.ServerScriptService.HozukiDNA.Disabled = true
end
if un == 12 then
	game.ServerScriptService.HozukiDNA.Disabled = false
	wait(40)
	game.ServerScriptService.HozukiDNA.Disabled = true
end
if un == 13 then
	game.ServerScriptService.HozukiDNA.Disabled = false
	wait(40)
	game.ServerScriptService.HozukiDNA.Disabled = true
end
if un == 14 then
	game.ServerScriptService.HozukiDNA.Disabled = false
	wait(40)
	game.ServerScriptService.HozukiDNA.Disabled = true
end
if un == 15 then
	game.ServerScriptService.HozukiDNA.Disabled = false
	wait(40)
	game.ServerScriptService.HozukiDNA.Disabled = true
end
if un == 16 then
	game.ServerScriptService.HozukiDNA.Disabled = false
	wait(40)
	game.ServerScriptService.HozukiDNA.Disabled = true
end
if un == 17 then
	game.ServerScriptService.HozukiDNA.Disabled = false
	wait(40)
	game.ServerScriptService.HozukiDNA.Disabled = true
end
if un == 18 then
	game.ServerScriptService.HozukiDNA.Disabled = false
	wait(40)
	game.ServerScriptService.HozukiDNA.Disabled = true
end
if un == 19 then
	game.ServerScriptService.HozukiDNA.Disabled = false
	wait(40)
	game.ServerScriptService.HozukiDNA.Disabled = true
end
if un == 20 then
	game.ServerScriptService.HozukiDNA.Disabled = false
	wait(40)
	game.ServerScriptService.HozukiDNA.Disabled = true
end
if un == 21 then
	game.ServerScriptService.YukiDNA.Disabled = false
	wait(40)
	game.ServerScriptService.YukiDNA.Disabled = true
end
if un == 22 then
	game.ServerScriptService.YukiDNA.Disabled = false
	wait(40)
	game.ServerScriptService.YukiDNA.Disabled = true
end
if un == 23 then
	game.ServerScriptService.SenjuDNA.Disabled = false
	wait(40)
	game.ServerScriptService.SenjuDNA.Disabled = true
end
if un == 24 then
	game.ServerScriptService.SenjuDNA.Disabled = false
	wait(40)
	game.ServerScriptService.SenjuDNA.Disabled = true
end
if un == 25 then
	game.ServerScriptService.SenjuDNA.Disabled = false
	wait(40)
	game.ServerScriptService.SenjuDNA.Disabled = true
end
if un == 26 then
	game.ServerScriptService.UzumakiDNA.Disabled = false
	wait(40)
	game.ServerScriptService.UzumakiDNA.Disabled = true
end
if un == 27 then
	game.ServerScriptService.UzumakiDNA.Disabled = false
	wait(40)
	game.ServerScriptService.UzumakiDNA.Disabled = true
end
if un == 28 then
	game.ServerScriptService.UzumakiDNA.Disabled = false
	wait(40)
	game.ServerScriptService.UzumakiDNA.Disabled = true
end
if un == 29 then
	game.ServerScriptService.UzumakiDNA.Disabled = false
	wait(40)
	game.ServerScriptService.UzumakiDNA.Disabled = true
end
if un == 30 then
	game.ServerScriptService.SaiyanDNA.Disabled = false
	wait(40)
	game.ServerScriptService.SaiyanDNA.Disabled = true
end
if un == 31 then
	game.ServerScriptService.UchihaDNA.Disabled = false
	wait(40)
	game.ServerScriptService.UchihaDNA.Disabled = true
end
if un == 32 then
	game.ServerScriptService.SteelDNA.Disabled = false
	wait(40)
	game.ServerScriptService.SteelDNA.Disabled = true
end

If you want it to constantly pick a number place it in a loop. For example,

while true do
	local num = math.random(1,5)
	if num == 1 then
		print(num)
		wait(2)
	elseif num == 2 then
		print(num)
		wait(2)
	elseif num == 3 then
		print(num)
		wait(2)
	elseif num == 4 then
		print(num)
		wait(2)
	elseif num == 5 then
		print(num)
		wait(2)
	end
end

but it depends on what you really want it to do. Do you want it to just keep picking random numbers? Or do you want it to pick another random number after you press a button? If its the latter, do not place it in a loop.