Replacing multiple strings in a word doc in PowerShell - powershell

Question

I'm trying to replace multiple strings in a word document using PowerShell, but only one string is replaced when running the code below:
#Includes
Add-Type -AssemblyName System.Windows.Forms
#Functions
#Function to find and replace in a word document
function FindAndReplace($objSelection, $findText,$replaceWith){
$matchCase = $true
$matchWholeWord = $true
$matchWildcards = $false
$matchSoundsLike = $false
$matchAllWordForms = $false
$forward = $true
$wrap = [Microsoft.Office.Interop.Word.WdFindWrap]::wdReplaceAll
$format = $false
$replace = [Microsoft.Office.Interop.Word.WdFindWrap]::wdFindContinue
$objSelection.Find.Execute($findText,$matchCase,$matchWholeWord,$matchWildcards,$matchSoundsLike,$matchAllWordForms,$forward,$wrap,$format,$replaceWith, $replace) > $null
}
$item1 = "Should"
$item2 = "this"
$item3 = "work"
$item4 = "?"
$fileName = "NewFile"
#Opens a file browsers to select a word document
$FileBrowser = New-Object System.Windows.Forms.OpenFileDialog -Property #{
InitialDirectory = [Environment]::GetFolderPath('Desktop')
Filter = 'Documents (*.docx)|*.docx'
}
Write-Host "Select word template file"
$FileBrowser.ShowDialog()
$templateFile = $FileBrowser.FileName
$word = New-Object -comobject Word.Application
$word.Visible = $false
$template = $word.Documents.Open($templateFile)
$selection = $template.ActiveWindow.Selection
FindAndReplace $selection '#ITEM1#' $item1
FindAndReplace $selection '#ITEM2#' $item2
FindAndReplace $selection '#ITEM3#' $item3
FindAndReplace $selection '#ITEM4#' $item4
$fileName = $fileName
$template.SaveAs($fileName)
$word.Quit()
If I comment out FindAndReplace the first one that runs works, but subsequent calls do not.
For example running this as is results in:
Input Output
#ITEM1# Should
#ITEM2# #ITEM2#
#ITEM3# #ITEM3#
#ITEM4# #ITEM4#
I'm not sure what I'm missing, any help would be appreciated

Answer 1

As was suggested it appears that the cursor was not returning to the beginning of the document. I added the following code:
Set-Variable -Name wdGoToLine -Value 3 -Option Constant
Set-Variable -Name wdGoToAbsolute -Value 1 -Option Constant
To the beginning of my script and:
$objSelection.GoTo($wdGoToLine, $wdGoToAbsolute, 1) > $null
as the first line in my FindAndReplace function, and now it works as expected.
There may be a more elegant solution, but this works for me