with creating table in table in Lua C-API - lua

Question

I use this code for creating table in table (Like namespace) in Lua C-API:
JNIEXPORT void JNICALL Java_com_naef_jnlua_LuaState_lua_1import_1tables(JNIEnv *env,
jobject obj, jstring namespace) {
lua_State *L;
JNLUA_ENV(env);
L = getluathread(obj);
char * str= getstringchars(namespace);
char ** res = NULL;
char * p = strtok (str, ".");
int n_spaces = 0, i;
while (p) {
res = realloc (res, sizeof (char*) * ++n_spaces);
if (res == NULL)
exit (-1);
res[n_spaces-1] = p;
p = strtok (NULL, ".");
}
for (i = 0; i < (n_spaces); ++i) {
if (i == 0) {
lua_newtable(L);
} else if (i == (n_spaces - 1)) {
lua_pushlstring(L, res[i], (sizeof(res[i])/sizeof(char))-1);
lua_getglobal(L, res[i]);
break;
} else {
lua_pushlstring(L, res[i], (sizeof(res[i])/sizeof(char))-1);
lua_newtable(L);
}
}
for (i = (n_spaces - 2); i >= 0 ; i--) {
if (i == 0) {
lua_setglobal(L, res[i]);
break;
} else {
lua_settable(L, -3);
}
}
free(res);
}
This is can be equals for this hardcode:
lua_newtable( L ); /* ==> stack: ..., {} */
{
lua_pushliteral( L, "b" ); /* ==> stack: ..., {}, "b" */
lua_newtable( L ); /* ==> stack: ..., {}, "b", {} */
{
lua_pushliteral( L, "c" ); /* == stack: ..., {}, "b", {}, "c" */
lua_newtable( L ); /* ==> stack: ..., {}, "b", {}, "c", {} */
{
lua_pushliteral( L, "d" );
lua_getglobal(L, "MyTable");
lua_settable( L, -3 );
}
lua_settable( L, -3 ); /* ==> stack: ..., {}, "b", {} */
}
lua_settable( L, -3 ); /* ==> stack: ..., {} */
}
lua_setglobal( L, "a" ); /* ==> stack: ... */
When i send i function Java_com_naef_jnlua_LuaState_lua_1import_1tables() String looks like this "com.naef.jnlua.test.fixture.TestObject"// TestObject is equivalent "MyTable", other like "com" tables in tables and TestObject table - the last table
When i try after this code execute lua code com.naef.jnlua.test.fixture.TestObject
attempt to index field 'naef' (a nil value)
Where i mistake?