How to read data in Page Control "Scroll Bar" in Component Buffer ?

Question

Folks,
Hello. My Component has 2 pages: "JournalLine" and "JournalTotal". In the page "JournalLine", I insert page control "Scroll Bar" and then insert a record "JournalLine2" into the "Scroll Bar". Thus, the Component Structure is as follows:
Scroll - Level0
JournalLine
JournalTotal
Scroll - Level1 Primary Record JournalLine2
The fields in "JournalLine" are Unit, ID, Date.
The fields in "JournalTotal" are Unit, ID, Date, TotalDebit, TotalCredit.
The fields in "JournalLine2" are Account, Amount.
Since the record "JournalLine2" is inside of the page "JournalLine" and inside of page control "Scroll Bar", I click on "+" push button and add as many lines as I need and type in data into each line.
My purpose is to add up all numbers in "Amount" field of "JournalLine2" and assign the total amount to "TotalDebit" or "TotalCredit" in "JournalTotal" page. My PeopleCode is as follows:
Local RowSet &level0, &level1, &level2;
Local Row     &total;
Local Field     &field;
&level0 = GetLevel0( );     /* get level0 Rowset */
&total = &level0(2);     /* get row JournalTotal because it's on the 2nd position in level0 */
&level1 = &level0.GetRow(1).GetRowSet(Scroll.JournalLine);     /* get level 1 RowSet for record JournalLine */
&level2 = &level1.GetRow(2).GetRowSet(Scroll.JournalLine2); /* Assume this line gets all records in JournalLine2 */
For &I = 1 to &level2.ActiveRowCount
     &field.Value = &field.Value + &level2.GetRow(2).JournalLine2.Amount.Value;
End-for;
&total.GetRecord(Record.JournalTotal).GetField(Field.TotalDebit).Value = &field.Value;
&total.GetRecord(Record.JournalTotal).GetField(Field.TotalCredit).Value = &field.Value;
I place the above PeopleCode in Record Field "Amount" FieldChange Event. Because all records and fields are in the component buffer, in Browser, after type in data into each line in the record "JournalLine2" in the page "JournalLine", then click on page tab "JournalTotal", the total amount should appear in the field "TotalDebit" or "TotalCredit". But nothing is in the field "TotalDebit" or "TotalCredit".
The above PeopleCode is not working out. I place the above code in component record field "Amount" FieldChange Event as well and not working either. My questions are:
First, Is it correct for the above PeopleCode to read all records in "JournalLine2" Scroll Bar in page "JournalLine" ?
Second, Do we need to use some methods like ScrollSelect( ) to read those data in Scroll Bar ?
Third, Do we need to use "ActiveRecordCount" instead of "ActiveRowCount" ?
Thanks in advance !

Answer 1

Folks,
This question has been solved by myself. Thanks.