Attempt to Concatenate a Nil Value

[ErrolLiamP]

I've created some entities that display a randomly selected number between 1/100 in a text bubble above them.
After multiple entities are spawned, the newer spawned ones spawn as errors with this lua error.
[lua]attempt to concatenate a nil value[/lua]
I get this on line 20.
My code
[lua] if level2number == nil then
level2number = 1
end

--local weehee = self.Entity:GetOwner()

if level2number >= 100 then
--if sirensquadnumber == 101 then
level2number = math.random(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 27, 28, 30, 31, 32, 33, 34, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100)
end

local level2nameslist = ("1 2 3 4 5 6 7 8 9 10 11 12 3 14 15 16 17 18 19 20 21 22 23 24 25 27 28 30 31 32 33 34 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100")

local level2names = string.Explode(" ", level2nameslist )

self.Entity:SetNetworkedString( 1, "" .. level2names[level2number] .. "" ) ---------------LINE20

level2number = level2number + math.random(13, 27, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 27, 28, 30, 31, 32, 33, 34, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100)[/lua]
And my code to make the text bubble show up is
[lua]AddWorldTip( self.Entity:EntIndex(), ( "Level " .. level .. "\n Quality: Unique" ), 5, self.Entity:GetPos(), self.Entity )[/lua]
Probably a dumb question with a simple answer, just having trouble finding it.

[man with hat]

This whole thing is just horribly written and formatted. You have bigger problems than trying to concatenate a nil value.

You're not using math.random correctly.

[url]http://wiki.garrysmod.com/page/math/random[/url]

Seriously, you need to look into these things. Don't be afraid to ask for help on a function you don't know about. Just use the wiki beforehand.

[PortalGod]

jesus

[lua]if not(level2number) then
level2number = 1
elseif(level2number >= 100) then
level2number = math.random(100)
end

self.Entity:SetNetworkedString(1, level2number)

level2number = level2number + math.random(100)[/lua]