"--STEP Updating assembly info"
function Update-SourceVersion
{
  Param ([string]$Revision)

  foreach ($o in $input)
  {
    Write-Host "Updating $o"
    $TmpFile  = $TmpFile + ".tmp"
     get-content $o.FullName |
        %{$_ -replace '(AssemblyVersion|AssemblyFileVersionAttribute|AssemblyFileVersion)\("([0-9]+\.[0-9]+\.[0-9]+)(\.[\*0-9]+)?"\)', ( '$1("$2.' + $Revision + '")' ) }  > $TmpFile

    Move-Item $TmpFile $o.FullName -force
  }
}

function Update-AllAssemblyInfoFiles ( $ProjectFolder, $version )
{
    Write-Host "Updating assembly info in:`n`t$ProjectFolder"
    # the pipe ? is "pipe - foreach "...
    Get-ChildItem $ProjectFolder -recurse -Include "AssemblyInfo.vb", "AssemblyInfo.cs" |  Update-SourceVersion $version
}

Update-AllAssemblyInfoFiles "$ENV:WORKSPACE\tmp" $ENV:SVN_REVISION