FYI,

From http://orgmode.org/worg/org-contrib/babel/intro.html

#+name: square(x)

#+begin_src python

return x*x

#+end_src

Now we use the source block:

#+call: square(x=6)

yields

Reference 'square' not found in this buffer .

It works fine if the parameter name is removed from the #name block:

#+name: square

#+begin_src python

return x*x

#+end_src

Now we use the source block:

#+call: square(x=6)

#+RESULTS: square(x=6)

: 36

---George Jones