How to call a stored procedure in remote data source with user-defined function by using Db2 Federation

update dbm cfg using federated YES;
uncatalog node FEDNODE2;
uncatalog db DATASDB2;
catalog tcpip node FEDNODE2 remote snore1.fyre.ibm.com server 50008;
catalog db testdbu as DATASDB2 at node FEDNODE2;

db2stop force;
db2start;
connect to testdbu;
drop WRAPPER "WRAPPER1";

CREATE WRAPPER "WRAPPER1" LIBRARY 'libdb2drda.so' OPTIONS(DB2_FENCED 'N');

CREATE SERVER SERVER1 TYPE DB2/UDB VERSION '11.5' wrapper "WRAPPER1" authorization "db2inst8" password "DVM_test123" OPTIONS (DBNAME 'DATASDB2' ,NODE 'FEDNODE2');

create user mapping for user server SERVER1 options (REMOTE_AUTHID 'db2inst8', REMOTE_PASSWORD 'DVM_test123');

--set passthru is to execute operations in remote database
set passthru SERVER1;
drop function test_tan;
drop procedure proc_test1;

create function test_tan(x double) returns double language SQL contains SQL NO EXTERNAL ACTION DETERMINISTIC return SIN(X)/COS(X);

CREATE OR REPLACE procedure proc_test1(IN ARGI1 DOUBLE, OUT ARGI2 DOUBLE) LANGUAGE SQL BEGIN values(test_tan(ARGI1)) into ARGI2 ;END;

--set passthru reset is to return to Db2 federation 
set passthru reset;

CREATE or REPLACE PROCEDURE nickname_proc1 SOURCE db2inst8.proc_test1 for server SERVER1;

call nickname_proc1(1,?);