Ian Barton <lists@wilkesley.net> writes:

> I am trying to pass a variable value to a latex source code block:
>
> * Letter.
> :PROPERTIES:
> :first_name: Ian
> :last_name: Barton
> :END:
>
> #+begin_src latex var: last_name =(org-get-entry nil "last_name")
>
> #+end_src
>
> However, it appears as though it's only supported for lisp. Any 
> suggestions as how to do this?
>
> I am trying to construct a business letter template using the KOMA 
> scrlttrs class. I have got the letter looking the way I want it in tex. 
> I propose to use babel to produce the tex, but need a way to pass 
> variables stored in my org file to the various komavar.
>
> I have tried org-koma-letter.el, which isn't quite flexible enough for 
> my needs. I know there have been several postings in the list about 
> using KOMA. If anyone is interested I found this 
> http://stefano.italians.nl/archives/55 site a great help in getting my 
> design the way I wanted it.
>
> Ian.
>

Looks like you're the victim of two small typos.

The following works for me.