table question

["Michael Cumming" <Mike@...>]

I am using Lua 4 and LuaCom.  I would like to maintain a "master" table of all open objects.  I have been playing around with some Lua code to see how tables are handled.  The code below is a quick and dirty test of creating an object which is returned to the caller and also stored in a master table.  I would like to be able to "destroy" the object by iterating the master table.  But if I set an the object in the master table to to nil, the table returned to the caller still exists.  Is there a way around this?
 
t = {}   -- master list of open objects
 
function newobject ()
  local o
  o = {"test"}  -- normally would be "creatobject"
  tinsert (t,o)
  return o
end
 
c = newobject ()
 
print (c)
print (t [1])
 
t [1] = nil
 
print (c)
print (t [1])

OUTPUT
 
table: 0157B360
table: 0157B360
table: 0157B360
nil
 
Thanks,
 
Mike

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