Db2 udf

Hi all,

Please tell me where i am wrong in DB2 UDF. its showing error:


CREATE Function getDATEPART(datevar varchar,yearvar varchar)
returns varchar (4)
begin
DECLARE datevar1 varchar (4) ;
DECLARE datevar2 varchar (4);

IF datevar = '1' THEN
datevar2='2'
end if;
return datevar2;
end


Please help me