v1.9.4/provisioner/powershell/test-fixtures/powershell-inline-provisioner.txt

{
  "type": "powershell",
  "environment_vars": "PackerRunUUID={{build `PackerRunUUID`}},ID={{build `ID`}}",
  "inline": [
    "Write-Host \"$env:ID for provisioner.$env:PackerRunUUID\""
  ]
}