[O] more than 2 indexes in org-mode -> latex

[Sharon Kimble]

How many indexes can you have in an org-mode document exported to latex?
My experience shows 2! So how can I have 3, or more please?

This is the relevant part, I think, of my preamble of my file -

--8<---------------cut here---------------start------------->8---
#+latex_header: \usepackage{imakeidx}
#+latex_header: \makeindex[title=Index,options=-s 
./index.ist,columnseprule,intoc]
#+latex_header: \makeindex[name=ps,title=Index of Symptoms,options=-s 
./index.ist,columnseprule,intoc]
# #+latex_header: \makeindex[name=se,title=Index of Side-effects,options=-s 
./index.ist,columnseprule,intoc]
--8<---------------cut here---------------end--------------->8---

I can have any choice of 2, but not 3 as I would like.

In a 'straight' latex file using the above commands I can have 3 or
more, so how do I get it to allow 3 or more in org-mode please?

Thanks
Sharon.
-- 
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