source: Option Explicit
  Dim a
  a = 40 + 8
  MsgBox "Test #48 - Sum " & a
target: Add-Type -AssemblyName Microsoft.VisualBasic
  Option Explicit
  
  $a = 40 + 8
  [Microsoft.VisualBasic.Interaction]::MsgBox "Test #48 - Sum " + $a