why wont this work ? PL\sql question

hi everbody

I'm quit new to oracle and i am trying to write some pl/sql code. I have writeen this code and what i try to do is this i have a table called "APP DATA" wich holds a number. I return this number and put the number + 1
back into the table.

FoundNr INTEGER;
BEGIN
   FoundNr := 0;
   SELECT Data Value INTO foundnr

      FROM Cookie.App Data
      WHERE Data Type = 1;

    UPDATE cookie.app data
    SET data value = 33
    WHERE data type = 1;
    RETURN FoundNr;
ELSE
    RETURN 0;
END IF;
EXCEPTION
WHERE OTHERS THEN
   RETURN 0; Every thing goes ok accept the update statement. I causes a jump to the exceptions and a return of 0. Running the same update (update app data set data value = 33 where data type = 1;) in sql plus work just fine !!! What am i doing wrong here ?

Cheers,

Robert

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