local variables and export processing in hooks

[Eric S Fraga]

Dear org mode users,

I have a small elisp function that I use to process my org file before
export to LaTeX or HTML, adding this function to
org-export-before-parsing-hook.  Briefly, the function exports the TBLFM
lines so that the org table calculations can be inspected.  This is for
pedagogical use.

This works just fine.  However, I don't want to do this generally so I
have a variable that controls whether the processing happens or not.  Is
there some way to make this variable local to an org file for use in the
export?  I have tried combinations of setq-local and #+BIND: but have
not yet managed to get this work successfully.

Thank you,
eric

-- 
: Eric S Fraga via Emacs 28.0.50, Org release_9.4.4-213-g49364f