Problem to update new column value of an excel file using MATLAB

Hi everyone. I really need a help with this problem. I want to update the y-axis column of an excel file (which i attached) by multiplying it with -1. Initially, i thought i got the solution. However, when i try to run, it display an error:

"Index in position 2 exceeds array bounds.Error in Change_Y_axis (line 29), dataset(:,k)=MarkerY_2(:,A);

I already make numbers of repairs, however the problem is still there.

Can anyone guide me and help me with this problem? I desperately need help :(

clc;
clear all;
close all;
c = '26_R2';
dataset  = xlsread('TEST.xlsx',c,'A1:CJ1200'); 
Frame = dataset(:,1);

 %% FOR SAVING PURPOSES %%                                        
for A = 0:1:27 % Maximum no. of markers is 28    
    j = 3*(A+1);
    MarkerY(:,A+1)   = dataset(:,j); %Saving to y-Axis     
end

MarkerY_2=[];
for A = 1:1:28   
    [No_row,No_column]=size(Frame);
    MIN = min(Frame);   
    for G = MIN:1:No_column
        MarkerY_2(A,Frame(G)) = MarkerY(A,Frame(G))*(-1); % I have problem at here
    end
    k = 3*(A);
    dataset(:,k)=MarkerY_2(:,A);
end