The multinomial logit model is a kind of model which has both alternative variant and invariant independent variables. In such a case, there is a requirement to change into a long format using data frame syntax due to variables nature.

But, I want to use R commander(Rcmdr) to calibrate multinomial logit model. how can I consider these alternative variant and invariant variables?

**Alternative specific(alternative variant)** variables are: act+wtt+invtt+lact+TC

**Generic(alternative invariant) Variables** : factor(GEN)+AGE+factor(OCC)+factor(INC)+factor(MAR)+factor(OWN)+factor(Routesused)+DIST...

**model 1** <-mlogit(mode~ *act+wtt+invtt+lact+TC* |*factor(GEN)+AGE+factor(OCC)+factor(INC)+factor(MAR)+factor(OWN)+factor(Routesused)+DIST* , data= mydata,reflevel="Taxi")

From the above model,we can use **"|"** sign to separate alternative variant and invariant variables in normal calibration using codes.

My question is how can I employ the variables in r-commander blog which is in the figure below(please , see the attached photo)