Listing 3: The Set-PrinterVariable Function That Assigns Printer Names to Variables

function Set-PrinterVariable{
# ******* BEGIN CALLOUT A *******
  # Clear the variables that might exist for printer names.
  Get-Variable lp* -Scope Global |
    Where-Object {$_.Name -match "^lp[0-9]+$"} |
    Remove-Variable -Scope Global
# ******* END CALLOUT A *******
# ******* BEGIN CALLOUT B *******
  $i = -1
  Get-WmiObject Win32_Printer | ForEach-Object {$i+=1;
    Set-Variable -Name "lp$i" -Value $_.Name -Scope Global}
# ******* END CALLOUT B *******
}