diff --git a/bpmm02_spread.txt b/bpmm02_spread.txt
index 6b0390a..38a0fac 100644
--- a/bpmm02_spread.txt
+++ b/bpmm02_spread.txt
@@ -184,11 +184,12 @@ main_block: BEGIN
   -- update 原單(hrs_leave), flow_level 及 flowstatus
   SELECT source_table, source_pk INTO v_tablename, v_source_pk FROM bpm_list WHERE flow_id = p_uuid;  
     
-  -- 動態更新原表
+  -- 動態更新原表(用 QUOTE 代替多單引號) 
   SET @sql = CONCAT(
-    'UPDATE ', v_tablename, ' SET flow_status = ''P''',
-    ', flow_signer = ''', IFNULL(v_all_signers, ''), '''',
-    ' WHERE ', v_source_pk, ' = ''', p_source_pk_value, ''''
+    'UPDATE ', v_tablename, 
+    ' SET flow_status = ', QUOTE('P'),
+    ', flow_signer = ', QUOTE(IFNULL(v_all_signers, '')),
+    ' WHERE ', v_source_pk, ' = ', QUOTE(p_source_pk_value)
   );
   
   PREPARE stmt FROM @sql;
diff --git a/bpmm02_udf_next_signer.txt b/bpmm02_udf_next_signer.txt
index b797754..063ffde 100644
--- a/bpmm02_udf_next_signer.txt
+++ b/bpmm02_udf_next_signer.txt
@@ -15,13 +15,13 @@ CREATE OR REPLACE FUNCTION bpmm02_udf_next_signer(
     ==== ========== ========== ================================================
     1    Michael    2022/11/27 Init 
 */
-RETURNS TEXT
+RETURNS VARCHAR(1000)
 BEGIN
   DECLARE v_imax INT;
   DECLARE v_imin INT;
   DECLARE v_inow INT;
   DECLARE v_signerid VARCHAR(20);
-  DECLARE v_all_signers TEXT;
+  DECLARE v_all_signers VARCHAR(1000);
   DECLARE v_lastsep VARCHAR(1);
   DECLARE v_rowid INT;