Excel - Sheets Rearranging through MATLAB

Hello,

I need to append sheets to existing excel file, but using following command it addes to the first. Say for example if their are three sheets namely "Sheet 1, Sheet 2 Sheet 3' the newly added Sheet 4 is coming in front of first sheet. But I want to append at the last, any possible way to do this. I am using ActiveX Commands.

ExcelWorkbook = Excel.workbooks.Add;
%For New Work Sheet
ExcelWorkbook.Sheets.Add();

    Thanks in advance