correcting notification times not being seen as ints

Start-DoneTickNotifier.ps1

@@ -3,7 +3,7 @@
 [string] $dtAPIKey = $ENV:DONETICKAPIKEY
 [string] $appriseWebhookURL = $ENV:APPRISEWEBHOOKURL
 [string] $appriseWebhookTag = $ENV:APPRISEWEBHOOKTAG
-[int[]]  $notificationTimes = $ENV:NOTIFICATIONTIMES | Sort-Object
+[int[]]  $notificationTimes = $ENV:NOTIFICATIONTIMES -split ","
 
 
 function Send-Notification
@@ -51,6 +51,10 @@ function Get-Chores
     }
 }
 
+if (-not $notificationTimes) { $notificationTimes = @(8) }
+else { $notificationTimes = $notificationTimes | Sort-Object }
+Write-Host "Notification times: $notificationTimes"
+
 while ($true) {
     $today = (Get-Date "23:59:59")
     $chores = Get-Chores
@@ -122,8 +126,9 @@ while ($true) {
     }
     if ($nextNotificationTomorrow)
     {
+        $time = $notificationTimes[0]
         Write-Host "Next notification time is $time`:00"
-        $diff = 24 - $now.Hour + $notificationTimes[0]
+        $diff = 24 - $now.Hour + $time
         $sleepTime = $diff * 60 * 60 # hours * mins * seconds
         Write-Host "Sleeping for $sleepTime seconds"
         Start-Sleep -Seconds $sleepTime