diff --git a/ClusterOperator/Backlog.js b/ClusterOperator/Backlog.js
index a74be88..3231e0b 100644
--- a/ClusterOperator/Backlog.js
+++ b/ClusterOperator/Backlog.js
@@ -206,7 +206,7 @@ class BackLog {
     }
     try {
       if (config.dbType === 'mysql') {
-        const record = await this.BLClient.execute(`SELECT * FROM ${config.dbBacklogCollection} WHERE seq=?`, [index]);
+        const record = await this.BLClient.query(`SELECT * FROM ${config.dbBacklogCollection} WHERE seq=${index}`);
         // log.info(`backlog records ${startFrom},${pageSize}:${JSON.stringify(totalRecords)}`);
         return record;
       }