Thread Subject:

.xla macro in Excel from Matlab

Hi,
I am trying to use an external application from Matlbab, it's a .xla macro that I can use in Excel.
Here's my code :

actx_excel = actxserver('Excel.Application');
actx_excel.Visible = 1;
Workbooks = actx_excel.Workbooks;
Workbook = Workbooks.Open(nomfichier);
current_feuille = actx_excel.Worksheets.Item(1);
current_feuille.Activate;
xlstats = actx_excel.AddIns.Add('macro.xla',1)
actx_excel.AddIns.Item(10).Installed = 1;
result= actx_excel.ExecuteExcel4Macro('!MACRO()','Aide');

This code does not work, I have in the command window :
result = ActiveX VT_ERROR:
And the help menu of my macro has not been run.

Please, could someone help me use this macro?
Moreover, for the second step, I'd like to pass data to this macro as arguments, excel range for example.
Thanks in advance.