How to use a BrowseForFolder box in my powershell script?

Hello,

I have the following script where I want to ask the user to select the folder they want the script to process the instructions from.  I've added a function for Select-Folder as follows:

function Select-Folder($message='Select a folder', $path = 0) {
$object = New-Object -comObject Shell.Application
$folder = $object.BrowseForFolder(0, $message, 0, $path)  
if ($folder -ne $null) {    
	$folder.self.Path
	}
}

Select-Folder 'Select the folder where the move scripts reside'

$files=Get-ChildItem $folder -Filter "*.txt"
foreach ($file in $files){
	$outFileName=[IO.Path]::GetFileNameWithoutExtension($file.Name) + "_StartVMs.txt"
	Get-Content $file.FullName | foreach{
		 Add-Content $folder\$outFileName "Start-ClusterResource ""$($_.Split('"')[1])"""
	}
}

Issue #1:

The .txt files I am creating live in the same location as where this script lives. What I've found is the path I choose in the browseforfolder box that pops up is ignored and the files are converted in the location where the script lives.

Issue #2:

How do I get the Cancel button to work so the script will exit if the user selects Cancel?

Any help you can provide would be greatly appreciated.

Thank you.