default lists for utils.multilistbox don't work properly

utils.multilistbox ("", "", {a="a", b="b", c="c", d="d", e="e", f="f", g="g", h="h", i="i", j="j", k="k", l="l", m="m", n="n"}, {a=true, b=true, c=true, d=true, i=true, m=true, n=true})

static int multilistbox (lua_State *L)  {...}

  for (set<int>::const_iterator iter = msg.m_iDefaults.begin ();
       iter != msg.m_iDefaults.end ();
       iter++)
         {
          CKeyValuePair kv = msg.m_data [*iter];
          AfxMessageBox ((LPCTSTR) CFormat ("item %i of msg.m_iDefaults (key %s, value %s) exists", 
                         *iter, kv.sKey_.c_str (), kv.sValue_.c_str ()));
         }

for k, v in pairs {a="a", b="b", c="c", d="d", e="e", 
                   f="f", g="g", h="h", i="i", j="j", 
                   k="k", l="l", m="m", n="n"} do
  print (k, v)
end -- for

a a
c c
b b
e e
d d
g g
f f
i i
h h
k k
j j
m m
l l
n n

i i
f f
n n
m m
c c
g g
b b
l l
j j
k k
d d
h h
a a
e e

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Illegal

contrary to or forbidden by law, esp. criminal law: illegal drugs.