Try it like this:

Application.Run "Workbook1.xls!Module1.Procedure1", Arg1, Arg2

RBS

"John Pritchard" wrote in message
...
I'd like to call sub routines that reside in another workbook. I know
about
application.run but if I want to pass arguments byref it doesn't seem to
work
(i.e. the changed value is not passed back). In the Vb help on calling
procedures with the same name there's this example:-
Sub Main()
[MyProject.vbp].[MyModule].Main
End Sub

I've tried renaming projects and using this:-
Sub Main()
[MyProject.xls].[MyModule].Hello
End Sub

..but can't make it see my hello procedure.
Where am I going wrong and once right will it allow me to do things like
this:-

Sub Main()
a = 1
b = 2
[MyProject.xls].[MyModule].Swap(a,b)
msgbox ("Swapped " & a & "," & b)
End Sub

Any help much appreciated! J.P.