Trying to create a trigger that adds a value to a field based on another field

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  Gurus,
  
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  >
  I am a bit newbie in Oracle and have never used collections.
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• Need to create a trigger that generates multiple rows in another table

  {size: 12} Hello
  
  I use Oracle9i (9.2.0.4.0)
  
  My problem is:
  I need to create a trigger that create different in the other table lines when someone will introduce a new line in the first table.
  
  For this, I use the table 4:
  
  1. first one where you want the trigger.
  2. a second just to take information.
  3. a third to make a trip meter.
  4. the fourth is the table where I want to create new lines. {size}
  
  Here is a summary of these 4 tables:
  
  {color: blue} Table 1
  STOJOU
  Number ¿Nulo? Tipo
  STOFCY_0 NOT NULL VARCHAR2 (9)
  ITMREF_0 NOT NULL VARCHAR2 (60)
  LOT_0 NOT NULL VARCHAR2 (45)
  VCRTYP_0 NOT NULL NUMBER (3)
  VCRNUM_0 NOT NULL VARCHAR2 (45)
  VCRLIN_0 NOT NULL NUMBER (10)
  QTYSTU_0 NOT NULL NUMBER
  NUMVCR_0 NOT NULL VARCHAR2 (45) {color}
  
  {color: blue} Table 2
  ITMMASTER
  Number ¿Nulo? Tipo
  ITMREF_0 NOT NULL VARCHAR2 (60)
  ZCOEFI_0 NOT NULL NUMBER {color}
  
  {color: blue} Table 3
  ZCTUART;
  Number ¿Nulo? Tipo
  CTUART_0 NOT NULL NUMBER (10)
  CTUDATE_0 NON NULL DATE {color}
  
  {color: blue} Table 4
  ZUART
  Number ¿Nulo? Tipo
  ZUARTDM_0 NOT NULL VARCHAR2 (102)
  STOFCY_0 NOT NULL VARCHAR2 (9)
  STOCOU_0 NOT NULL NUMBER
  ITMREF_0 NOT NULL VARCHAR2 (60)
  LOT_0 NOT NULL VARCHAR2 (45)
  CREDAT_0 NOT NULL DATE
  QTYSTU_0 NOT NULL NUMBER
  STA_0 NOT NULL VARCHAR2 (3)
  VCRLIN_0 NOT NULL NUMBER (10)
  VCRNUM_0 NOT NULL VARCHAR2 (45)
  VCRTYP_0 NOT NULL NUMBER (3) {color}
  
  I do this trigger:
  

  CREATE OR REPLACE TRIGGER CREA_REGISTROS_TRAZA
  AFTER INSERT ON STOJOU
  FOR EACH ROW
  DECLARE
     n INTEGER;
     ct NUMBER;
     fecha_actual VARCHAR2;
     fecha_old VARCHAR2;
     codigo_dm VARCHAR2;
  BEGIN
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     -- SELECT TO_CHAR(sysdate, 'DD/MM/YYYY') INTO fecha_actual FROM DUAL;
     SELECT TRUNC((STOJOU.QTYSTU_0/ITMMASTER.ZCOEFI_0),0) INTO n FROM STOJOU INNER JOIN ITMMASTER ON STOJOU.ITMREF = ITMMASTER.ITMREF;
        FOR i IN 1 .. n
     LOOP
        SELECT CTUART_0,TO_CHAR(CTUDAT_0, 'DD/MM/YYYY') INTO ct,fecha_old FROM ZCTUART;
        IF fecha_old <> fecha_actual THEN
          ct := 0;
        END IF;
        ct := ct + 1;
        INSERT INTO ZCTUART
          (CTUART_0,CTUDAT_0)
        VALUES
          (ct,SYSDATE);
        codigo_dm := SUBSTR('000000000000000000000',1,20 - LENGHT(NEW.ITMREF_0)) || NEW.ITMREF_0 || SUBSTR('0000000000',1,10 - LENGHT(NEW.LOT)) || NEW.LOT || SUBSTR('0000',1,4 - LENGHT(ct)) || ct;
        INSERT INTO ZUART
          (ZUARTDM_0,ITMREF_0,CREDAT_0,STA_0,QTYSTU_0,LOT_0,STOFCY_0,VCRLIN_0,VCRNUM_0,VCRTYP_0)
        VALUES
          (codigo_dm,NEW.ITMREF_0,SYSDATE,0,NEW.QTYSTU_0,NEW.LOT_0,NEW.STOFCY_0,NEW.VCRLIN_0,NEW.VCRNUM_0,NEW.VCRTYP_0);
     END LOOP;
  END CREA_REGISTROS_TRAZA;
  /

  {size: 12} And the error message I get States is just:
  "The trigger was created with compilation errors."
  Thanks for the help {size}

  You must prefix your NEW "columns" with a colon, as in: NEW.

• I've created a form that uses the value field text to fill the text of another field.  Does not take into account changes

  I've created a form that uses the value field text to fill the text of another field.  However, if I need to change the text, the second field does not update this change.  Instead of reset the form each time, is the Javascript code to update the fields if they have been modified?

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  I want to create an insert after trigger on a table that is to send a mail with an attachment. Here is my code.

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