Replace cell text in Excel

How can I replace a cell's text in Excel with another text?

%%DATA INPUT FROM PRESPECIFIED EXCEL FILE
[~, text, ~] = xlsread('input.xlsx');
Country = text(1,1)
% Replace text in cell A1 in input.xlsx with another text here
%%EXPORTS OUTPUT DATA TO PRESPECIFIED FILE
filename = 'output.xlsx';
A = [Country];
sheet = 1;
xlRange = 'A2'; 
xlswrite(filename,A,sheet,xlRange)

Answer 1

[Image Analyst]

Why not

xlswrite(filename,Country,sheet,xlRange)

Country should be a cell with a string inside of it, so this should work.

Answer 2

[Bjarte]

I am not sure if that works in my case. I am trying to run a function with input parameters from input.xlsx, and export resulting outputs to output.xlsx. Once finished, it should change one of the input parameters in input.xlsx, and export the new output.