diff --git a/internal/api/msg.go b/internal/api/msg.go
index 9266dc8a8..99882d45e 100644
--- a/internal/api/msg.go
+++ b/internal/api/msg.go
@@ -470,7 +470,7 @@ func (m *MessageApi) CallbackExample(c *gin.Context) {
 		return
 	}
 
-	content["content"] = req.Content
+	content["content"] = str
 	input := &apistruct.SendMsgReq{
 		RecvID: req.SendID,
 		SendMsg: apistruct.SendMsg{