I got stuck trying to calculate a FX formula. The thing is I don't now how to make the proper expression.

This is how I want to calculate

((Strecka1  +  Strecka2  +  Strecka3)  *  Perkm ) +

(PALL  *  Antal_pall)  +   

(Antal_kartonger  *  KARTONG)+

(Startkostnad ) 

How can I write the proper expression for this)

Another question, is it possible to use defined variabels in FX formula?

I make a variabel named rec12 and give it a value but I can't use it in FX formula expression?

Its a great program by the way!!!!

Thanks!!!!

Anders