I have a problem with string variables:

I have created this button in an Excel sheet to which I have attached a Macro.
When I bring out the Programming code, it shows projects and modules. The
real program is in the module and it is called by an expression €œCall Macro1€�
found in the projects section of the spreadsheet.
I am creating about 40 Macro buttons which will have to do the same
procedure but with 2 different variables changing with every button. These
are string variables.
Thus far I have done the following:

In the Project sheet these are my lines:

Private Sub CommandButton1_Click()
S$ = "7A"
N$ = "B3"
Call Macro1
End Sub

In the Macro (in the module €“ the procedure), I have used the following
lines:
Sheets(S$).Select
Range(N$).Select

But it gives me an error while executing.
I have tried putting the variable assignments in the same Macro1, and it
works. But that doesnt solve anything for me.
As I guess it, the variable values are not passing from the Project sheet to
the Macro.

I have even tried to use another Macro2 and place my variable assignments
there. Calling Macro2 first and then Macro1. It still doesnt work.

Any solution to this problem? I am in a hurry guys.
Please Help. I am new to this.

Regards.