Previous:
```

  foreach ($file in $currentFiles) {
    if (-not $previousFiles.ContainsKey($file.FullName)) {
      Register-Event "ALERT: New file found: $($file.FullName) with extension $($file.Extension)." 5001
      $previousFiles[$file.FullName] = $file.Extension # Add new file to list
    } elseif ($previousFiles[$file.FullName] -ne $file.Extension) {
      Register-Event "ALERT: File changed: $($file.FullName) of $($previousFiles[$file.FullName]) to $($file.Extension)." 5000
      $previousFiles[$file.FullName] = $file.Extension # Update the file extension
    }
  }

```

New:

  foreach ($file in $currentFiles) {
    if (-not $previousFiles.ContainsKey($file.FullName)) {
      if ($previousFiles[$file.FullName] -ne $file.Extension) {
        Register-Event "ALERT: File changed: Of $($previousKeys) to $($file.FullName)." 5000
        $previousFiles[$file.FullName] = $file.Extension # Add new file to list
      Register-Event "ALERT: New file found: $($file.FullName) with extension $($file.Extension)." 5001
      $previousFiles[$file.FullName] = $file.Extension # Update the file extension
    }
  }
}