BYPASS

I am trying to setup a plot log routine and would like my dialog box to load prior to autocad's plot dialog.
I believe in order to make this load for every plot I have to set up a reactor to avoid this being bypassed should the user type .plot
I have never used reactors and could use some help!
I have the following code saved as a lisp routine, is this correct?
Is the formatting correct?
Will this work?
I have a lisp that loads all routines at startup, should the following code be placed there instead?


(vl-load-com)
(defun CommandReactor (objReactor lstCommand);
(cond
((= (car lstCommand) "PLOT")
(Clog) ;PLOT LOG ROUTINE
(princ)
)
)
)
(setq rxnCommand ( vlr-editor-reactor nil '(vlr-commandwillstart . CommandReactor))))
(cleanreactors)

(defun cleanreactors ( / TMP)
(vlr-remove-all :vlr-dwg-reactor)
)