User input at file template creation

Hi.

I'm trying to create a clever DTO template, i.e. mainly a class that holds a number av values accessible through getters.

I know I can write $-variables in the template which will be represented by fields in my template creation popup so that I can name all my values in one place.

Like this:

I can also make so that if a value isn't entered in a "var.."-box, the value won't show up int the class.

But is there a way that would enable me to choose nr of values to enter in the template creation popup, so that I'm not limited to a fixed nr of values in my template?