Changing membership function params\range

I have some membership function with defined parameters and range for FIS inputs. I want to know how does params change when we change the range?!

example1: 3 mf , type: gauss2mf , Range:[0 100] , mf2 Params= [16.99 45 16.99 55] when I change the range in membership function editor to [-1 1] , then second mf Params automatically

changes to [0.3398 -0.1 0.3398 0.1] and the graphs doesn't change.

example 2: 3 sigmf for an input with range [0 100] . The mf2 Params changes from [0.1099 25]

to [5.493 -0.5] when ranges become [-1 1].

Is there any function or relation to calculate parameters in command line?

thanks