What is the wrong in this PL/SQL block

Question

Hi a...
Can you please tell what is the wrong in this pl/sql block.
declare
TYPE TYP_NT_NUM IS TABLE OF NUMBER ;
v_tab TYP_NT_NUM := TYP_NT_NUM();
TYPE uname is VARRAY(30) of varchar2(100) ;
usr uname := uname ( 'u1','u2','u3','u4' );
TYPE pwd is VARRAY(30) of varchar2(100) ;
psw pwd := pwd('p1','p2','p3','p4');
x number(10):=0;
Cursor fcid IS Select distinct FC_ID From FCMASTER ;
Begin
Open fcid ;
--for ii in usr.first .. usr.last loop
     Loop
          Fetch fcid Into x ;
          Exit When fcid%NOTFOUND ;
          v_tab(fcid%ROWCOUNT) := x ;
     End loop ;
     For iii IN v_tab.FIRST .. v_tab.LAST Loop
          dbms_output.put_line(v_tab(iii).FC_ID) ;
          End loop ;
End loop; End of outer loop
End;
The error is
Error
[row:28,col:36] ORA-06550: line 28, column 36:
PLS-00487: Invalid reference to variable 'NUMBER'
ORA-06550: line 28, column 4:
PL/SQL: Statement ignored
Thanks in advance,
Pal

Answer 1

v_tab(iii).FC_ID
declare
  type typ_nt_num is table of number;
  v_tab typ_nt_num;
begin
  select distinct object_id bulk collect into v_tab from all_objects where rownum <= 10;
  for i in 1 .. v_tab.count loop
    dbms_output.put_line(v_tab(i)) ;
  end loop ;
end;
/