insert - Inserting a changing table into another table. Tables values are the same when they should be different -

i trying make table tables inside of it. tables go inside change previous value. end result tables inside main table equal each other , equal latest value.

local array = {} local x  local y  function test(a)   if a==1     x = {1,1}     print("x returned")     y = x     k,v in pairs(x) print(k,v) end     return x   end    if a>=1     p=math.random(1,2)     n=math.random(2,4)     table.remove(y,p)     table.insert(y,p,n)     print("")     print("y returned")     k,v in pairs(y) print(k,v) end     return y   end  end   array[1] = test(1) array[2] = test(2) array[3] = test(3)  print("") k,v in pairs(array) print(k,v) end testtable=array[1] print("") k,v in pairs(testtable) print(k,v) end 

output:

x returned 1   1 2   1  y returned 1   1 2   3  y returned 1   1 2   4  1   table: 0x678300 2   table: 0x678300 3   table: 0x678300  1   1 2   4 

the 3 tables inside array should different each other. doing wrong? there tables don't know?

tables objects, means variable doesn't contain value of table. instead, holds reference table. in function test, when do:

y = x 

now y , x both reference same table. that's why 3 tables inside array same.