Arne,
Others have mentioned the type definition part, but AFAIK declaring the
objects as "ByVal" is pointless as all objects are passed by reference, the
default.
Unless I'm mistaken, but as a quick test :

Private Sub CommandButton1_Click()
Range("B3").Value = "Initial value"
Call TestByValObject(Range("B3"))
Debug.Print Range("B3").Value

Dim TestStr As String
TestStr = "Initial value"
Call TestByValStr(TestStr)
Debug.Print TestStr
End Sub

Function TestByValObject(ByVal argObject As Range)
argObject.Value = "If really ByVal, you cannot see this change."
End Function

Function TestByValStr(ByVal argString As String)
argString = "If really ByVal, you cannot see this change."
End Function

NickHK

"Arne Hegefors" ...
Hello! I have become somewhat unsure of certian things regarding the
syntax
in vba. therefor I would truly appreciate answers to the following
questions:

1) In the beginning of a sub that takes two arguments do you have to
write:
Private Sub checkReturnDifference(ByVal rng1 As Range, ByVal rng3 As
Range)
or can you write ....(ByVal rng1, rng3 As Range)

2) When declaring new variables is it necessary to write:
Dim i As Integer
Dim k As Integer
....
or is there a shorter way of doing this?

I know that these questions does not seem very important but when you have
meny variables then it does actually make a difference. thus, any help
appreciated! thank you all very much!