diff --git a/extend/lbson/src/bson.h b/extend/lbson/src/bson.h
index 08c00910..d27e48e3 100644
--- a/extend/lbson/src/bson.h
+++ b/extend/lbson/src/bson.h
@@ -345,7 +345,8 @@ namespace lbson {
                     size_t sz;
                     const char* buf = lua_tolstring(L, -1, &sz);
                     if (buf[0] == 0 && sz >= 2) {
-                        m_buffer.push_data((uint8_t*)buf + 1, sz - 1);
+                        write_key((bson_type)buf[1], key, len);
+                        if (sz > 2) m_buffer.push_data((uint8_t*)(buf + 2), sz - 2);
                     } else {
                         write_key(bson_type::BSON_STRING, key, len);
                         write_string(buf, sz);
diff --git a/server/test/mongo_test.lua b/server/test/mongo_test.lua
index 1b1e4f1b..343d9219 100644
--- a/server/test/mongo_test.lua
+++ b/server/test/mongo_test.lua
@@ -35,9 +35,9 @@ timer_mgr:once(2000, function()
     icode, ierr = mongo_mgr:drop_indexes("test_mongo_2", "test_uid")
     log_debug("db drop_indexes code: {}, err = {}", icode, ierr)
     
-    icode, ierr = mongo_mgr:insert(primary_id, "test_mongo_1", {pid = 123457, uid = 3, time = quanta.now_ms, ttl = bdate(quanta.now + 30)})
+    icode, ierr = mongo_mgr:insert(primary_id, "test_mongo_1", {pid = 123457, uid = 3, time = quanta.now, ts = quanta.now_ms, tm = os.time() ttl = bdate(quanta.now + 30)})
     log_debug("db insert code: {}, err = {}", icode, ierr)
-    icode, ierr = mongo_mgr:create_indexes("test_mongo_1", {{key={pid,1,uid,1},name="test_uid", unique = true}})
+    icode, ierr = mongo_mgr:create_indexes("test_mongo_1", {{key={"pid",1,"uid",1},name="test_uid", unique = true}})
     log_debug("db create_indexes code: {}, err = {}", icode, ierr)
 
     --[[