Block the Save popup box generated from Excel

In Excel I can block the Save popup box generated from "exlWkbk.Close" by adding this code to Excel:

"Application.EnableEvents = False"

How can I add this Excel command to MatLab:

Execute "!!!insert code here!!!" = Application.EnableEvents = False

exl = actxserver('excel.application');
exlWkbk = exl.Workbooks;
exlFile = exlWkbk.Open(['C:\Documents and Settings\Owner\My Documents\a Data\a Matlab\addm.xlsm']);
exlSheet1 = exlFile.Sheets.Item('Sheet1');
!!!insert code here!!!

exlWkbk.Close;
exl.Quit;