Internal stored procedure getting executed only once within a do-while loop in a main stored procedure. - response (2) by TD@NIAR

Hi VandeBergB
The outer sp is provided below. Intially i am creating a table by picking up columns and datatypes from other table.
Later, I am calling a stored procedure in the second do-while loop, which is supposed iterate for every var1 value.
However, in my case the sp2 is executing as per the intial var1 value after which it exits through the sp2 instead of
coming back into the main procedure.
REPLACE PROCEDURE db.proc(IN ip1 VARCHAR(24), IN ip2 INTEGER)
MAIN:BEGIN -- Main BEGINS Here
 DECLARE var3,var1,var2,var4,var5 VARCHAR(24);
 DECLARE qt2,qr3,qc,qry_ins VARCHAR(8000);
 DECLARE CC_MAX,CC_MIN  INTEGER;
 SET var3 = ip1;
     
CREATE VOLATILE TABLE vt2
     (
      col4 VARCHAR(24) ,
      col5 VARCHAR(6) ,
      col6 INTEGER,
      col7 INTEGER,
   col8 INT )
PRIMARY INDEX ( col4) on commit preserve rows;
SET QRY_INS =    'INSERT INTO vt2 SEL col4,col5,col6,col7,ROW_NUMBER() OVER (ORDER BY col7) AS col8
        FROM st2 WHERE scol1 = '||''''|| ip1 ||''''|| ';';
EXECUTE IMMEDIATE QRY_INS;
SEL MAX(col8),MIN(col8) INTO CC_MAX,CC_MIN FROM vt2;
WHILE (CC_MIN<=CC_MAX)
  DO
   
   SELECT col4 into var1 from vt2 where  col8 = CC_MIN;
   CALL db.sp2(''''||var1||'''',''|| tbl2||'', ''||tbl3||''
           ,''||var3||'',''||var4||'',var5); 
   
   SET CC_MIN = CC_MIN + 1;
  END WHILE;  
END MAIN;