Make one common change to 100+ policies - best method?

######################################################
$apiKey = 'yourApiKeyHere'
$orgID = "yourorIdHere"
$changefrom = "high"
$changeto = "low"

#####Only update the two Variables in this block######
######################################################

#Api Request
$headers = @{ "Authorization" = "Bearer $apiKey" }
$uri = "https://console.automox.com/api/policies?o=$clientID"
$responses = (Invoke-WebRequest -Method Get -Uri $uri -Headers $headers).Content | ConvertFrom-Json

$ids = $responses | ? {$_.name -match "Windows Policy"} | Select -ExpandProperty id
#Use this for one device# $ids = '123456'
#Use this for multiple devices#  $ids = @('xxxx','xxxx','xxxx')
$middle = '?o='

$ids | % {
$PolicyID = $_

$headers = @{ "Authorization" = "Bearer $apiKey" }
$url = "https://console.automox.com/api/policies/$policyID$middle$orgID"
$response = (Invoke-WebRequest -Method Get -Uri $url -Headers $headers).Content

$policyfinal = $response.replace("$changefrom","$changeto")


$body = @"
$policyfinal
"@


$headers = @{
    "Authorization" = "Bearer $apiKey"
    "Content-Type" = "application/json"
  }
$url = "https://console.automox.com/api/policies/$policyID$middle$orgID"
Invoke-WebRequest -Method Put -Uri $url -Headers $headers -Body $body
}