why is my output does not change ?

hello I want to write a code for shifting a signal : so lets suppose I have this signal : x(n) and i want to move it like this x(n-2) so this my main code :

clc; clear all; close all;

x=[2 3 0 -5 2 1]
m=2
n=[-1:4]
k=-1 

%shift signal x(2-k)

[n_y,y] = shift_signal_by_k(x,m,n,k)

and this is my function shift_signal_by_k:

function [n_y,y] = shift_signal_by_k(x,m,n,k)

   if (k<0)

          if(n>0)
          n_y=m+flip(-n)
          disp('n') %%h(m-k)
          y=flip(x);

          elseif(n<0)

          n_y=n-m;
          y=flip(x);

          else(n==0)

           n_y=n
           y=flip(x)
          end
   end

end

how ever my new n after shifting by 2 stays the same ? why ?

[tomer polsky]

never mind i found my mistake thank you