Bulk Collect / Forall insert PLS-00436 error.

Hi, I am running the following code to create a forall insert but I am receiving the following error and cannot figure out why ...  I'm not sure what this error message is telling me.  Thanks,

ORA-06550: line 34, column 4:
PLS-00436: implementation restriction: cannot reference fields of BULK In-BIND table of records

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create table tmp_table1 as select col1, col2, col3, col4, col5, col6 from table1 where 1 = 2;

declare

cursor curOrders is
select 
 a.col1, a.col2, a.col3, a.col4, a.col5, a.col6
 from
 table1 a
 join
table2 b
on a.col1 = b.col1 and a.col2 = b.col2;

type tbl_bulk is table of curOrders%rowtype;

varOrders tbl_bulk;

begin
open curOrders;
loop
fetch  curOrders bulk collect into varOrders limit 500;
  
forall indx in 1 .. varOrders.count
  
  insert into  tmp_table1
  (col1, col2, col3, col4, col5, col6)
  values
  (varOrders(indx).col1, varOrders(indx).col2, varOrders (indx).col3, varOrders(indx).col4, varOrders(indx).col5, varOrders(indx).col6);

exit when curOrders%notfound;
 --exit when varClaims.count < 500;  which is better?
   end loop;

close curOrders;
commit;
end;
/

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