begin
    declare @msgid varchar(128);
    declare @rmsgid varchar(128);
    declare @replyaddr varchar(128);
    set @msgid = ml_qa_getmessage( 'myaddress' );
    set @replyaddr = ml_qa_getreplyaddress( @msgid );
    if @replyaddr is not null then
        set @rmsgid = ml_qa_createmessage();
        call ml_qa_settextcontent( @rmsgid, 'message received' );
        call ml_qa_setinreplytoid( @rmsgid, @msgid );
        call ml_qa_putmessage( @rmsgid, @replyaddr );
    end if;
    commit;
end