How to replace a value for blank

Hello, I have a excel sheet with 3 columns, 1st is with time, and 2nd and 3rd with variable values X1 and X2.

What i want to do is, in column 2 replace the 5th valur for "blank" and in column 3 the 10th value for "blank" as well.

    % code
A=readtable('experiencia.xlsx');
[n,m] = size(A);
for i=1:n
A{5,2}= %something to make blank
A{10,3}= %something to make a blank
  end

another thing, when i use

    % code
A=xlsread('experiencia.xlsx');
  end

the 1st column from the picture does not appear

And when i use % code A=readtable('experiencia.xlsx'); end

it apears the table like the picture, but i cant do nothing

Thanks for your help

Answer 1

[Pawel Jastrzebski]

If you import the data as a table, I don't think you are allowed to have a 'blank values'.

Consider a following example:

clear all;
clc;

t = readtable('example.xlsx');

The output will be:

It is possible to 'blank' the cell when you turn the Table in into Cell array:

clear all;
clc;

t = readtable('example.xlsx');

tC = table2cell(t);
tC{3,1} = [];

xlswrite('example1.xlsx', tC);