[Excel] - class module in a xla file

[isabelle]

Hi to all

I have a xla file. It should share functions which are common to 2 other excel files
But the classes of these 2 files are also the same, so I integrated a class module in my xla file
And now, my 2 files can view the class (I added a reference to this xla file) but impossible to do something with that
Here is my code :
' module which have access to the xla class (named "toto")
Sub test(
Dim X As tot
X.Init ("toto"
End Su

' Function in my class (named "toto") of my xla file
Sub test(
Dim X As tot
X.Init ("toto"
End Su

What's wrong with that, I can't also add a word 'new' to my 'normal' module
Thks a lot for your answer