Anonymous block and CURSOR

New to Oracle9i and in need of help? I am trying to added a column to the mm_movie table named stk_flag that will hold a value of '*' if stock is $75 or more .Othrwise the value is NULL I am to added the column and create a anonymous block tha contains a CURSOR FOR loop to accompish tha task.


DECLARE
CURSOR nmovie_qty IS
Select value, price
from mm_movie
FOR UPDATE NOWAIT;
lv_stock mm_movie.stk_flag%TYPE;
BEGIN
FOR rec_prod IN nmovie_qty LOOP
IF rec_prod.value >= 75 THEN lv_stock :=
rec.prod.price '*';
END IF;
IF rec_prod.vlaue < 75 THEN lv_stock :=
rec.prod.price null;
END IF;
UPDATE mm_movie
SET stk_flag = lv_stock
WHERE CURRENT OF nmovie_qty = 75;
END LOOP;
COMMIT;
END;
/
ERROR MESSAGE IS as :

rec.prod.price '*';
*

ERROR at line 10:
ORA-06550: line 10, column 40:
PLS-00103: Encountered the symbol "*" when expecting one of the following:
. ( * @ % & = - + ; < / > at in is mod not rem
<an exponent (**)> <> or != or ~= >= <= <> and or like
between ||
The symbol "." was substituted for "*" to continue.
ORA-06550: line 13, column 42:
PLS-00103: Encountered the symbol "NULL" when expecting one of the following:
. ( * @ % & = - + ; < / > at in is mod not rem
<an exponent (**)> <> or != or ~= >= <= <> and or like
between ||
The symbol "*" was substituted for "
ORA-06550: line 17, column 34:
PLS-00103: Encountered the symbol "=" when expecting one of the following:
. ( % ;

Bleah ... too easy

Probably he prefers writing queries like "Select ... where stk_flag = '*'" over "Select ... where value > 75"

Pablo ? what am I doing wrong ?
UPDATE mm_movie
SET STK_FLAG = case
When value >= 75 then '*'
end

After making the change then my DECLARE statement has a * errors?

/
DECLARE
CURSOR nmovie_qty IS
Select value, price
from mm_movie
FOR UPDATE NOWAIT;
lv_stock mm_movie.stk_flag%TYPE;
BEGIN
FOR rec_prod IN nmovie_qty LOOP
IF rec_prod.value >= 75 THEN lv_stock :=
rec.prod.price '*';
END IF;
IF rec_prod.vlaue < 75 THEN lv_stock :=
rec.prod.price null;
END IF;
UPDATE mm_movie
SET stk_flag = lv_stock
WHERE CURRENT OF nmovie_qty = 75;
END LOOP;
COMMIT;
END;
/