create function that excepts and returns a date

Im trying to create a function that will accept a date field and a constant and return a date field. So
sq_getdate(dateplaced,'*mtdf')

When i try to execute my sql, i get a "note found" message. I believe it has to do with parameter types, but not sure how to fix it.

Here is my create command:
CREATE FUNCTION MYLIB/SQ_GETDATE(
date,
CHARACTER(6)
)
RETURNS date
SPECIFIC SQ_GETDATE
DETERMINISTIC
LANGUAGE RPGLE
NO SQL
NO EXTERNAL ACTION
RETURNS NULL ON NULL INPUT
SCRATCHPAD
NO FINAL CALL
ALLOW PARALLEL
EXTERNAL NAME 'MYLIB/SQLUDF02(SQ_GETDATE)'
PARAMETER STYLE DB2SQL

Prototype:
d SQ_GETDATE...
d Pr
d datein D
d datefmt 6
d dateout D
D NullIndIn 4B 0
D NullIndOut 4B 0
D SQLState 5A
D FunctionName 517A CONST OPTIONS(*VARSIZE) VARYING
D SpecificName 128A CONST OPTIONS(*VARSIZE) VARYING
D DiagMessage 70A OPTIONS(*VARSIZE) VARYING
D ScratchPad 104A OPTIONS(*VARSIZE) VARYING
D CallType 4B 0
D DBInfo 1024A OPTIONS(*VARSIZE:*NOPASS)
D CONST VARYING