Change Worksheet Name (Excel) via Powershell - excel

Question

I have an challenge that I need to change on a daily basis in a XLSX document the existing sheet name to a new sheet name and than save it
My script looks like this:
$xlspath = "C:\Users\roger\Test - Test\Daily_Files\Testfile.xlsx"
$xldoc = new-object -comobject Excel.application
$xldoc.DisplayAlerts = $false
$xldoc.Visible =$false
$workbook = $xldoc.Workbooks.Open($xlspath)
$worksheet = $workbook.worksheets.item(1)
$worksheet.name = "Headcount"
$workbook.Save = ($xlspath)
$workbook.Close()
$xldoc.Quit()
I always get this error - even so the file gets save and the name has changed:
C:\CommonUserData\Roger\Test\Test.ps1:8 char:1
+ $workbook.Save = "C:\Users\roger\Test - Test\Daily_Files\ ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : OperationStopped: (:) [], COMException
+ FullyQualifiedErrorId : System.Runtime.InteropServices.COMException ```
Does someone have an idea how to solve this or make this a very simple script?

Answer 1

You don't even need the .Save() or .SaveAs() methods for this. Just close the workbook with parameter $true:
$xlspath = "C:\Users\roger\Test - Test\Daily_Files\Testfile.xlsx"
$xldoc = New-Object -ComObject Excel.application
$xldoc.DisplayAlerts = $false
$xldoc.Visible =$false
$workbook = $xldoc.Workbooks.Open($xlspath)
$worksheet = $workbook.worksheets.item(1)
$worksheet.Name = "Headcount"
$workbook.Close($true) # save the updated workbook
$xldoc.Quit()
# Important: remove references to the used COM objects when finished so they don't keep lingering in memory
$null = [System.Runtime.Interopservices.Marshal]::ReleaseComObject($worksheet)
$null = [System.Runtime.Interopservices.Marshal]::ReleaseComObject($workbook)
$null = [System.Runtime.Interopservices.Marshal]::ReleaseComObject($xldoc)
[System.GC]::Collect()
[System.GC]::WaitForPendingFinalizers()