Veja isso :
CREATE OR REPLACE PROCEDURE FMIS3.UPDATE_LETTER_BODY ( body_text IN FMS_K_OFFICEWISE_LETTER.FKOL_LETTER_BODY%type,condition_id in FMS_K_OFFICEWISE_LETTER.FKOL_OFFICEWISE_LETTER_ID%type)IS
begin
update FMS_K_OFFICEWISE_LETTER set FKOL_LETTER_BODY= body_text
where FKOL_OFFICEWISE_LETTER_ID=condition_id;
end;