Powershell Experten gefragt

$path_settings2 = "settings_hl7_csv.ini"  
Get-Content $path_settings2 | ForEach-Object -Begin { $settings2 = @{ } } -Process { $store2 = [regex]::split($_, '='); if (($store2.CompareTo("") -ne 0) -and ($store2.StartsWith("[") -ne $True) -and ($store2[0].StartsWith("#") -ne $True)) { $settings2.Add($store2, $store2[1]) } }  

$src = $tb_HL7_einlesen.Text
$filesIN = $settings2.Get_Item("Quellpfad")  
$fileOUT = $settings2.Get_Item("Zielverzeichnis")  
$fileOUT_xls = $settings2.Get_Item("Zielverzeichnis_XLS")  

$msg = hl7-to-object((get-content $src))
(Get-ChildItem $filesIN) | foreach {
$HL7_reihe1 = (($msg | where { $_.Segment -eq "MSH" } | select -First 1).Fields)  
$array1 = $HL7_reihe1.split('|')  
1 .. ($array1.count - 0) | %{
$array1 = $array1.Replace("~\&", "")  
$array1 = $array1.Replace("MSH", "")  
$empty_entry_MSH = "$($array1[$_])=MSH_Position_$_"  
if ($($array1[$_]) -eq "") { $empty_entry_MSH = "" }  
$empty_entry_MSH = $empty_entry_MSH | Where { $_ -ne "" } | ForEach { $_.Replace(" ", "") }  
write-host $empty_entry_MSH
}

[MSH]
MSH_Position_3=LAM
MSH_Position_4=DAS
MSH_Position_5=MS
MSH_Position_6=HRS

[PID]
MSH_Position_3=0080012103
MSH_Position_5=SC02
MSH_Position_6=Lab Integration

$process_HL7 = Get-ChildItem $filesIN *.HL7
while ($true)
{ if (Get-ChildItem $filesIN *.HL7)
{konvertierung} 
}

function konvertierung
{
<############# in diesem Bereich habe ich Probleme

$auswahl = $settings2.Get_Item | Where-Object { $_ -like "*Position*" }  

################>

$auswahl = $auswahl -join ","  
$arr = @();$arr += $auswahl
$obj = $arr | ConvertFrom-Csv -Delimiter ","  
# Export nach CSV
$obj | ConvertTo-Csv -Delimiter ";" -NoTypeInformation | Set-Content $fileOUT -Force | Set-Content UTF8  
if (!(Test-Path -path $filesIN\converted)) { New-Item -ItemType directory -Path $filesIN\converted }
move-item -path $filesIN\*.HL7 -destination $filesIN\converted
}