Passing data between two canvases

Question

Canvas A is a data entry form where users enter group number, paid from date and paid to date(static data).
Then they select from 1 to 30 reports(dynamic data) they want about the group.
Canvas B has a spread sheet appearance where the static data and the dynamic data is displayed for
verification of correctness before running the reports. The static and dynamic data for each report is
displayed one line per report. Canvas B updates a report database so the reports can be run at a scheduled
time other than the middle of the day.
If the user selects reports 1, 5, 11, 19, and 35 on A, I want the 5 reports lines on B to be the first 5 lines
instead of being tied to a specific line on B, i.e. report 5 options show up in the order selected instead of
always being on line 5 of B.
I tried to program loading canvas B like I do on the mainframe using a loop and an index number:
PROCEDURE PRC_BUILD_CANVASB IS
     loop_counter Number(2);
BEGIN
loop_counter := 1;
IF :CHK_REPORT1 = 'Y' THEN
:CHK_RUN(loop_counter) := 'Y';
:TXT_REQ_REPORT_ID(loop_counter) := 'Report 1';
:TXT_REQ_GRP_FROM(loop_counter) := :TXT_BGN_FROM||:TXT_BGS_FROM;
:TXT_REQ_PAID_FROM(loop_counter) := :TXT_PAID_FROM;
:TXT_REQ_PAID_TO(loop_counter) := :TXT_PAID_TO;           
loop_counter := loop_counter + 1;
END IF;                    
IF :CHK_REPORT2 = 'Y' THEN
:CHK_RUN(loop_counter) := 'Y';
:TXT_REQ_REPORT_ID(loop_counter) := 'Report 2';
:TXT_REQ_GRP_FROM(loop_counter) := :TXT_BGN_FROM||:TXT_BGS_FROM;
:TXT_REQ_PAID_FROM(loop_counter) := :TXT_PAID_FROM;
:TXT_REQ_PAID_TO(loop_counter) := :TXT_PAID_TO;           
loop_counter := loop_counter + 1;
END IF;                    
IF :CHK_REPORT3 = 'Y' THEN
:CHK_RUN(loop_counter) := 'Y';
:TXT_REQ_REPORT_ID(loop_counter) := 'Report 3';
:TXT_REQ_GRP_FROM(loop_counter) := :TXT_BGN_FROM||:TXT_BGS_FROM;
:TXT_REQ_PAID_FROM(loop_counter) := :TXT_PAID_FROM;
:TXT_REQ_PAID_TO(loop_counter) := :TXT_PAID_TO;           
loop_counter := loop_counter + 1;
END IF;
END;
I keep getting an error: Error 49 bad bind variable :CHK_RUN(loop_counter) . I tried preferencing the :CHK_RUN with
the block name and got the same error.
Any suggestions.
Bob

Answer 1

You cannot access a block's record by entering the record number behind the
items. Instead, you have to create / go to your record and then manipulate the
data of the currenr record. E.G.:
go_block('B');
clear_block;
if :A.check1 = 'Y' then
:b.report := 'something';
create_record; -- Jumps to next record for next if-then
end if;
if :A.check2 = 'Y' then
:b.report := 'some other thing';
create_record; -- Jumps to next record for next if-then
end if;
first_record;