Changing array values in a VBA dictionary

I have a piece of code that does not seem to do what it is expected to do. VBA Arrays are mutable by all means, but it seems that when they are stored into a Dictionary as values of some keys, they are not mutable anymore. Any ideas?

Sub foo()
    Dim mydict As New Dictionary
    mydict.Add "A", Array(1, 2, 3)
    MsgBox mydict("A")(1)
    ''# The above shows 2, which is fine
    mydict("A")(1) = 34
    MsgBox mydict("A")(1)
    ''# The above also shows 2, which is not fine
End Sub

It seems you'll need yet to set another var to update the array value.

mArray = mydict.Item(1)
mArray(1) = 34
mydict.Item(1) = mArray

I created a Procedure to solve the same issue, so I could keep it as a "oneliner":

Private Sub pReplaceDicArray(Dic As Object, kEy As Variant, Element As Integer, NewValue)
    Dim tempArray As Variant
    tempArray = Dic(kEy)
    tempArray(Element) = NewValue
    Dic(kEy) = tempArray
End Sub
' call as:
' Call mReplaceDicArray(Dic, "A", 1, 8)