diff --git a/src/client/src/tscParseOpenTSDB.c b/src/client/src/tscParseOpenTSDB.c
index d0891a3e1d3cf3e866e94037172cf46da11fe6a6..7bca2d0af3f91c28e953ea8fba42bca5c7b1a9aa 100644
--- a/src/client/src/tscParseOpenTSDB.c
+++ b/src/client/src/tscParseOpenTSDB.c
@@ -526,9 +526,9 @@ int32_t parseMetricValueFromJSON(cJSON *root, TAOS_SML_KV **pKVs, int *num_kvs,
     case cJSON_String: {
       //convert default JSON String type to nchar
       pVal->type = TSDB_DATA_TYPE_NCHAR;
-      pVal->length = wcslen((wchar_t *)metricVal->string) * TSDB_NCHAR_SIZE;
+      pVal->length = wcslen((wchar_t *)metricVal->valuestring) * TSDB_NCHAR_SIZE;
       pVal->value = tcalloc(pVal->length + 1, 1);
-      memcpy(pVal->value, metricVal->string, pVal->length);
+      memcpy(pVal->value, metricVal->valuestring, pVal->length);
       break;
     }
     default: