script.ps1

$ServiceConfigFileName = "ServiceConfiguration.Cloud.cscfg"

$CscfgFile = Get-Item $ServiceConfigFileName

If (Test-Path $CscfgFile){
    Write-Output "File $ServiceConfigFileName was found on $($cscfgfile.FullName)"
}
else{
    Write-Error "File $ServiceConfigFileName was not found"
}
#[xml]$cscfgcontent = Get-Content $CscfgFile

#changing the node [ServiceConfiguration.Role[0].Instances.count]

#$cscfgcontent.ServiceConfiguration.Role[0].Instances.count = "1"

#$cscfgcontent.ConfigurationSettings.Role[0].WebHostUrl = "http://test.com"

#saving the changes

#$cscfgcontent.Save($cscfgfile.FullName)