JESS: Combining JESS.clp and normal Java GUI

Hi Community,

not long ago I asked you how to store rules in an excel sheet. Me and my
tutor are totally ok with the apache api for accessing our rules.
I programmed a small GUI (see attached) were all the input can be made.
My question right now is:
Is it possible to link my input fields to my seperated jess-file called
Bachelorarbeit.clp?
And my other question is:
How do I have to write the rules in Bachelorarbeit.clp so they can
handle input?
I tried working with the examples from "Jess in Action" but so far i do
not have any success.
At the moment my "program" looks like this:

(bind ?beta_sz 52.5)
(bind ?b_sz 2.5)
(bind ?l_sz 3)
(bind ?r_sz_2 0.6)
(bind ?r_sz_3 0.3)


(progn (bind ?TEPS_linear (+     (* ?b_sz -0.216)
                                 (* ?l_sz 0.685)
                                 (* ?r_sz_2 0.392)
                                  0.867 ))
     (printout t "TEPS_linear ist " ?TEPS_linear crlf))


(progn (bind ?TEPS_poly (+    (* +0.000 (** ?beta_sz 4))
                                (* +0.035 (** ?b_sz 1))
                             (* -0.103 (** ?l_sz 3))
                             (* -0.163 (** ?r_sz_2 5))
                             (* -0.002 (** ?r_sz_3 5))
                             -0.126)
         )
     (printout t "TEPS_polynomial ist " ?TEPS_poly crlf)
  )

I declared my variables to check if i can handle the formulas. What i
want to do now is to write a piece of code to catch the variables from
the GUI (?beta_sz to ?r_sz_3). When this is done I finally want to
outsource the rule part to excel and only have the GUI and the catcher
for my variables in the code.
Thank you in advance guys.
I am happy for every little piece of help.
Greetings from good old cloudy cold Germany
Florian