Variable to be used from Lyx in the LaTeX text

[Dr Eberhard Lisse]

Hi,

I have designed me a few form letters, and in one I need to use a
date repeatedly in the text.  It is a bit of a nuisance to have to
look for the date throughout the text.

I can put in LaTeX variables and enter the value in the preamble but
wonder how I would create another variable (such as PS/CC/Encl) in
the drop down menu so it appears at the top of the LyX text.

Any suggestions?

el