Use xlwrite on a specific cell of an EXcel file

Hi everybody, I want to write matlab program results into an Excel file . For Windows Platform I used to use xlswrite and it works well

Example with xlswrite:

Filename='Results'; sheetName=strcat('Sheet11'); xlwrite(Filename, {'c2'},sheetName,'A7'); xlwrite(Filename, c2,sheetName,'B7');

Now, i need to get the samething with xlwrite that works for both Windows and Mac! write in the same sheet in extended mode on specific cells of an Excel file.

Thank you for your help