[AdamSpeight2008]

If it is possible?
How do I specify the default to be a Empty Array?

Tried using code below.

Private Function Foo(byref Option A() as Type = {} )
End Function 

Solved the problem differently by changing the Optional variable A to a String.
But suppose I want to use a type that isn't easily converted to a string.

[RodgerB]

Set the object to equal Nothing (null), and initialize the optional value when function is called.

Private Function lal(Optional ByVal opt() As String = Nothing) As Boolean
    opt= New String(0) {"weeeeeee"}
    Return True
End Function

Hope that helps.

[AdamSpeight2008]

RodgerB thank-you I'd forgotten about Nothing.
Used the code below as I needed empty array.

Private Function lal(Optional ByVal opt() As String = Nothing) As Boolean
 If opt is nothing then 
  opt= New String() {} ' Empty Set required.
 end if
 Return True
End Function

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