Adding onto object id ints returning nil

[Captain Cody]

Title says it all, adding onto the object id integers returns nil

  
local IdAA = getElementModel(selecteda["object"]) 
if IdAA ~= 1007 
then 
local IdBB = IdAA + 1 
elseif IdAA == 1007 then 
local IdBB = IdAA + 10 
end 

local Objectbbb = createObject ( IdBB, x3,cy,cz, 0, 0, 0, true ) 

-- Debug says, expected number at argument 1, got nil --

And it seams if I remove the if statement and just do

local Objectbbb = createObject ( IdAA+1, x3,cy,cz, 0, 0, 0, true ) 

It works, but then I cannot add the 10 for the other number

[Tomas]

What are you trying to do?

[Captain Cody]

Found another way to do it--

But what I'm trying to do is making a mirror function for the fully customizational mod shop I'm working in that gets the id of the object in hand, then creates its opposite side version 'Side skirtL -> Side SkirtR'

[Bonus]

It's your own fault:

local a = 0 
if a == 0 then 
     local a = 1 
     outputChatBox ( a )        --> outputs 1 
end  
outputChatBox ( a )      --> outputs 0 
  
  
local a = 0 
if a == 0 then 
      local b = 0 
      outputChatBox ( b )       --> 0 
else 
      local b = 1 
      outputChatBox ( b )         --> 1 
end 
outputChatBox ( b )   --> nil 

Local is only available in the same "block".

Blocks are:

file 
function 
if 
else 
elseif 
for 
while 
repeat 

An end closes the block (not in file).

[Captain Cody]

Ah ok, though local was just locked to that set function.

[MAB]

"object" is wrong, you can't pass elements as strings.

local IdAA = getElementModel(selecteda[object]) 

[Bonus]

selecteda["object"] = element

[Captain Cody]

"object" is not wrong, the object is assigned to a table earlier in the script.