Table local name

Hey. Maybe someone encountered such a problem., I want to change the name of the table with a variable, but get no results table name code sample:

local x11= {242, 367, 367, 367, 367, 367}
local y11= {816, 816, 816, 816, 816, 816}

local x12= {226, 384, 384, 384, 384, 384}
local y12= {816, 816, 816, 816, 816, 816}

local n=n+1
local m=m+1

br1 = display.newImage( “r”… m …""… n … “1.png”, true )
br1.x =((“x”)…m…n)[1]
br1.y =((“y”)…m…n)[1]

with this code and the error: Attempting to set property X with nil
Attempting to set property Y with nil
[import]uid: 194825 topic_id: 36389 reply_id: 336389[/import]