How to fix: Cell contents assignment to a non-cell array object?

Following is the part of my code where I am getting 'Cell contents assignment to a non-cell array object' error.

 for kk = 1:2
      switch choosePara(kk)
          case 4
              [FileName,PathName] = uigetfile({'*.txt';'*.csv';'*.*'},'Select the text file that contains the data')
              paramMat{kk}{end+1} = FileName;
              paramMat{kk}{end+1} = PathName;
          case 8
              [FileName,PathName] = uigetfile({'*.txt';'*.csv';'*.*'},'Select the text file that contains the data');
              paramMat{kk}{end+1} = FileName;
              paramMat{kk}{end+1} = PathName;
      end
  end

I am working on the GUI of my code where this error is coming. The code does assign values to FileName and PathName but still gives this error on:

paramMat{kk}{end+1} = FileName;

Is there anything I can do to fix this? Also can anyone explain why this error is coming?

Answer 1

[adi kul]

Found the solution: The paraMat array was defined with [] brackets which should be defined by {} where remaining code was calling this array.

Answer 2

[Guillaume]

Well, clearly either paramMat is not a cell array, or the cell at paramMat{kk} does not contain a cell array. Your code is expecting a cell array of cell arrays.

How is paramMat created?

[adi kul]

Thank you for the suggestion. Actually I messed up the brackets!