so u want a script when monster dies the wall gets removed and then it is back after 20 sec?
local cfg = {
from_pos = {x = 1707,y = 2305,z = 7}, -- area south-west corner.
to_pos = {x = 1729,y = 2343,z = 7}, -- area north-east corner.
mobpos = {x = 1000,y = 2343,z = 7}, --pos...