How can I return values from a function to use later in my script?

To return additional information from your function, modify it to return a PSCustomObject instead of just a boolean. That way, when you find the app, you can return all needed properties in one go. Here's an example of how to do that:

```PowerShell
function CheckApp {
# Define paths to check
foreach ($path in $paths) {
$items = Get-ItemProperty $path
foreach ($item in $items) {
if ($item.DisplayName -like "*$AppName*") {
return $item # Return the entire item object
}
}
}
return $false
}
```
This way, when you call CheckApp, you'll get the item's details directly into `$Part2` that you can use in your script!

Instead of returning just true or false, you can have your function return the entire registry item when found. So when you call `CheckApp`, it will give you access to `DisplayVersion`, `InstallDate`, and `PSPath` all at once, like this:

```PowerShell
$Part2 = CheckApp
if ($Part2) {
# Now you can access $Part2.DisplayVersion, $Part2.InstallDate, etc.
}
```

You could also separate the functionalities. Have `CheckApp` just check for the app and return the relevant details, and then create another function to handle the API call. This way, your code stays clean and easy to manage. Here’s a quick outline:

```PowerShell
function NotifyTeams {
# Logic to send the notification
}

function CheckApp {
$appDetails = @() # Array to store details
# ... Check logic
return $appDetails # Return the details
}
```
Then you can call `NotifyTeams` with the details after confirming the app is installed!

You might be overcomplicating it a bit with functions. If you want a quick solution without needing a full function, you can just directly get properties from the items you check. Here's a streamlined version of your code for clarity:

```PowerShell
$items = Get-ItemProperty -Path
foreach ($item in $items) {
if ($item.DisplayName -like "*$AppName*") {
# At this point, you have access to all properties
Send-TeamsMessage -AppDetails $item
}
}
```