Unable to execute code block using #+CALL:

[Naresh Gurbuxani]

For below code blocks in R and emacs-lisp, C-c C-c sends results to
*Messages* buffer.  How can I get the results in the org file?

#+name: calc_half
#+begin_src R :exports code :results silent :var x=0
  x / 2
#+end_src

#+CALL: calc_half(x = 5) :exports results :results output

My function call returns call_calc_half(x = 6)

#+name: double
#+begin_src emacs-lisp :exports code :results silent :var n=1 
  (* 2 n)
#+end_src

#+CALL: double(n = 4)

Now an inline result call_double[:exports results](n = 3).